Hermes-agent

This commit is contained in:
Zakaria
2026-06-14 14:30:48 -04:00
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"""Memory provider plugin discovery.
Scans two directories for memory provider plugins:
1. Bundled providers: ``plugins/memory/<name>/`` (shipped with hermes-agent)
2. User-installed providers: ``$HERMES_HOME/plugins/<name>/``
Each subdirectory must contain ``__init__.py`` with a class implementing
the MemoryProvider ABC. On name collisions, bundled providers take
precedence.
Only ONE provider can be active at a time, selected via
``memory.provider`` in config.yaml.
Usage:
from plugins.memory import discover_memory_providers, load_memory_provider
available = discover_memory_providers() # [(name, desc, available), ...]
provider = load_memory_provider("mnemosyne") # MemoryProvider instance
"""
from __future__ import annotations
import importlib
import importlib.machinery
import importlib.util
import logging
import sys
from pathlib import Path
from typing import List, Optional, Tuple
from hermes_cli.config import cfg_get
logger = logging.getLogger(__name__)
_MEMORY_PLUGINS_DIR = Path(__file__).parent
# Synthetic parent package for user-installed providers, so they don't
# collide with bundled providers in sys.modules.
_USER_NAMESPACE = "_hermes_user_memory"
def _register_synthetic_package(name: str, search_locations: List[str]) -> None:
"""Register an empty package shell in sys.modules.
User-installed providers import as ``_hermes_user_memory.<name>``, a
dotted name whose parents exist nowhere on disk. Unless those parents
are present in ``sys.modules``, any relative import inside the plugin
(``from . import config``) fails with
``ModuleNotFoundError: No module named '_hermes_user_memory'`` — the
same reason the loader already registers ``plugins`` and
``plugins.memory`` for bundled providers.
"""
if name in sys.modules:
return
spec = importlib.machinery.ModuleSpec(name, None, is_package=True)
spec.submodule_search_locations = search_locations
sys.modules[name] = importlib.util.module_from_spec(spec)
# ---------------------------------------------------------------------------
# Directory helpers
# ---------------------------------------------------------------------------
def _get_user_plugins_dir() -> Optional[Path]:
"""Return ``$HERMES_HOME/plugins/`` or None if unavailable."""
try:
from hermes_constants import get_hermes_home
d = get_hermes_home() / "plugins"
return d if d.is_dir() else None
except Exception:
return None
def _is_memory_provider_dir(path: Path) -> bool:
"""Heuristic: does *path* look like a memory provider plugin?
Checks for ``register_memory_provider`` or ``MemoryProvider`` in the
``__init__.py`` source. Cheap text scan — no import needed.
"""
init_file = path / "__init__.py"
if not init_file.exists():
return False
try:
source = init_file.read_text(errors="replace")[:8192]
return "register_memory_provider" in source or "MemoryProvider" in source
except Exception:
return False
def _iter_provider_dirs() -> List[Tuple[str, Path]]:
"""Yield ``(name, path)`` for all discovered provider directories.
Scans bundled first, then user-installed. Bundled takes precedence
on name collisions (first-seen wins via ``seen`` set).
"""
seen: set = set()
dirs: List[Tuple[str, Path]] = []
# 1. Bundled providers (plugins/memory/<name>/)
if _MEMORY_PLUGINS_DIR.is_dir():
for child in sorted(_MEMORY_PLUGINS_DIR.iterdir()):
if not child.is_dir() or child.name.startswith(("_", ".")):
continue
if not (child / "__init__.py").exists():
continue
seen.add(child.name)
dirs.append((child.name, child))
# 2. User-installed providers ($HERMES_HOME/plugins/<name>/)
user_dir = _get_user_plugins_dir()
if user_dir:
for child in sorted(user_dir.iterdir()):
if not child.is_dir() or child.name.startswith(("_", ".")):
continue
if child.name in seen:
continue # bundled takes precedence
if not _is_memory_provider_dir(child):
continue # skip non-memory plugins
dirs.append((child.name, child))
return dirs
def find_provider_dir(name: str) -> Optional[Path]:
"""Resolve a provider name to its directory.
Checks bundled first, then user-installed.
"""
# Bundled
bundled = _MEMORY_PLUGINS_DIR / name
if bundled.is_dir() and (bundled / "__init__.py").exists():
return bundled
# User-installed
user_dir = _get_user_plugins_dir()
if user_dir:
user = user_dir / name
if user.is_dir() and _is_memory_provider_dir(user):
return user
return None
# ---------------------------------------------------------------------------
# Public API
# ---------------------------------------------------------------------------
def discover_memory_providers() -> List[Tuple[str, str, bool]]:
"""Scan bundled and user-installed directories for available providers.
Returns list of (name, description, is_available) tuples.
Bundled providers take precedence on name collisions.
"""
results = []
for name, child in _iter_provider_dirs():
# Read description from plugin.yaml if available
desc = ""
yaml_file = child / "plugin.yaml"
if yaml_file.exists():
try:
import yaml
with open(yaml_file, encoding="utf-8-sig") as f:
meta = yaml.safe_load(f) or {}
desc = meta.get("description", "")
except Exception:
pass
# Quick availability check — try loading and calling is_available()
available = True
try:
provider = _load_provider_from_dir(child)
if provider:
available = provider.is_available()
else:
available = False
except Exception:
available = False
results.append((name, desc, available))
return results
def load_memory_provider(name: str) -> Optional["MemoryProvider"]:
"""Load and return a MemoryProvider instance by name.
Checks both bundled (``plugins/memory/<name>/``) and user-installed
(``$HERMES_HOME/plugins/<name>/``) directories. Bundled takes
precedence on name collisions.
Returns None if the provider is not found or fails to load.
"""
provider_dir = find_provider_dir(name)
if not provider_dir:
logger.debug("Memory provider '%s' not found in bundled or user plugins", name)
return None
try:
provider = _load_provider_from_dir(provider_dir)
if provider:
return provider
logger.warning("Memory provider '%s' loaded but no provider instance found", name)
return None
except Exception as e:
logger.warning("Failed to load memory provider '%s': %s", name, e)
return None
def _load_provider_from_dir(provider_dir: Path) -> Optional["MemoryProvider"]:
"""Import a provider module and extract the MemoryProvider instance.
The module must have either:
- A register(ctx) function (plugin-style) — we simulate a ctx
- A top-level class that extends MemoryProvider — we instantiate it
"""
name = provider_dir.name
# Use a separate namespace for user-installed plugins so they don't
# collide with bundled providers in sys.modules.
_is_bundled = _MEMORY_PLUGINS_DIR in provider_dir.parents or provider_dir.parent == _MEMORY_PLUGINS_DIR
module_name = f"plugins.memory.{name}" if _is_bundled else f"{_USER_NAMESPACE}.{name}"
init_file = provider_dir / "__init__.py"
if not init_file.exists():
return None
# Check if already loaded. A synthetic package shell registered by
# discover_plugin_cli_commands() for relative-import support has no
# __file__; only reuse modules that were actually loaded from disk.
cached = sys.modules.get(module_name)
if cached is not None and getattr(cached, "__file__", None):
mod = cached
else:
# Handle relative imports within the plugin
# First ensure the parent packages are registered
for parent in ("plugins", "plugins.memory"):
if parent not in sys.modules:
parent_path = Path(__file__).parent
if parent == "plugins":
parent_path = parent_path.parent
parent_init = parent_path / "__init__.py"
if parent_init.exists():
spec = importlib.util.spec_from_file_location(
parent, str(parent_init),
submodule_search_locations=[str(parent_path)]
)
if spec:
parent_mod = importlib.util.module_from_spec(spec)
sys.modules[parent] = parent_mod
try:
spec.loader.exec_module(parent_mod)
except Exception:
pass
# User-installed plugins need their synthetic parent registered the
# same way, or relative imports inside the plugin cannot resolve.
if not _is_bundled:
_register_synthetic_package(_USER_NAMESPACE, [])
# Now load the provider module
spec = importlib.util.spec_from_file_location(
module_name, str(init_file),
submodule_search_locations=[str(provider_dir)]
)
if not spec:
return None
mod = importlib.util.module_from_spec(spec)
sys.modules[module_name] = mod
# Register submodules so relative imports work
# e.g., "from .store import MemoryStore" in holographic plugin
for sub_file in provider_dir.glob("*.py"):
if sub_file.name == "__init__.py":
continue
sub_name = sub_file.stem
full_sub_name = f"{module_name}.{sub_name}"
if full_sub_name not in sys.modules:
sub_spec = importlib.util.spec_from_file_location(
full_sub_name, str(sub_file)
)
if sub_spec:
sub_mod = importlib.util.module_from_spec(sub_spec)
sys.modules[full_sub_name] = sub_mod
try:
sub_spec.loader.exec_module(sub_mod)
except Exception as e:
logger.debug("Failed to load submodule %s: %s", full_sub_name, e)
try:
spec.loader.exec_module(mod)
except Exception as e:
logger.debug("Failed to exec_module %s: %s", module_name, e)
sys.modules.pop(module_name, None)
return None
# Try register(ctx) pattern first (how our plugins are written)
if hasattr(mod, "register"):
collector = _ProviderCollector()
try:
mod.register(collector)
if collector.provider:
return collector.provider
except Exception as e:
logger.debug("register() failed for %s: %s", name, e)
# Fallback: find a MemoryProvider subclass and instantiate it
from agent.memory_provider import MemoryProvider
for attr_name in dir(mod):
attr = getattr(mod, attr_name, None)
if (isinstance(attr, type) and issubclass(attr, MemoryProvider)
and attr is not MemoryProvider):
try:
return attr()
except Exception:
pass
return None
class _ProviderCollector:
"""Fake plugin context that captures register_memory_provider calls."""
def __init__(self):
self.provider = None
def register_memory_provider(self, provider):
self.provider = provider
# No-op for other registration methods
def register_tool(self, *args, **kwargs):
pass
def register_hook(self, *args, **kwargs):
pass
def register_cli_command(self, *args, **kwargs):
pass # CLI registration happens via discover_plugin_cli_commands()
def _get_active_memory_provider() -> Optional[str]:
"""Read the active memory provider name from config.yaml.
Returns the provider name (e.g. ``"honcho"``) or None if no
external provider is configured. Lightweight — only reads config,
no plugin loading.
"""
try:
from hermes_cli.config import load_config
config = load_config()
return cfg_get(config, "memory", "provider") or None
except Exception:
return None
def discover_plugin_cli_commands() -> List[dict]:
"""Return CLI commands for the **active** memory plugin only.
Only one memory provider can be active at a time (set via
``memory.provider`` in config.yaml). This function reads that
value and only loads CLI registration for the matching plugin.
If no provider is active, no commands are registered.
Looks for a ``register_cli(subparser)`` function in the active
plugin's ``cli.py``. Returns a list of at most one dict with
keys: ``name``, ``help``, ``description``, ``setup_fn``,
``handler_fn``.
This is a lightweight scan — it only imports ``cli.py``, not the
full plugin module. Safe to call during argparse setup before
any provider is loaded.
"""
results: List[dict] = []
if not _MEMORY_PLUGINS_DIR.is_dir():
return results
active_provider = _get_active_memory_provider()
if not active_provider:
return results
# Only look at the active provider's directory
plugin_dir = find_provider_dir(active_provider)
if not plugin_dir:
return results
cli_file = plugin_dir / "cli.py"
if not cli_file.exists():
return results
_is_bundled = _MEMORY_PLUGINS_DIR in plugin_dir.parents or plugin_dir.parent == _MEMORY_PLUGINS_DIR
module_name = f"plugins.memory.{active_provider}.cli" if _is_bundled else f"{_USER_NAMESPACE}.{active_provider}.cli"
try:
# Import the CLI module (lightweight — no SDK needed)
if module_name in sys.modules:
cli_mod = sys.modules[module_name]
else:
if not _is_bundled:
# cli.py imports as _hermes_user_memory.<name>.cli, usually
# before the provider itself is loaded. Register its parent
# packages so relative imports inside cli.py
# ("from . import config") resolve without executing the
# plugin's __init__.py. The package shell has no __file__,
# so _load_provider_from_dir() will still load the real
# module later instead of reusing the shell.
_register_synthetic_package(_USER_NAMESPACE, [])
_register_synthetic_package(
f"{_USER_NAMESPACE}.{active_provider}", [str(plugin_dir)]
)
spec = importlib.util.spec_from_file_location(
module_name, str(cli_file)
)
if not spec or not spec.loader:
return results
cli_mod = importlib.util.module_from_spec(spec)
sys.modules[module_name] = cli_mod
spec.loader.exec_module(cli_mod)
register_cli = getattr(cli_mod, "register_cli", None)
if not callable(register_cli):
return results
# Read metadata from plugin.yaml if available
help_text = f"Manage {active_provider} memory plugin"
description = ""
yaml_file = plugin_dir / "plugin.yaml"
if yaml_file.exists():
try:
import yaml
with open(yaml_file, encoding="utf-8-sig") as f:
meta = yaml.safe_load(f) or {}
desc = meta.get("description", "")
if desc:
help_text = desc
description = desc
except Exception:
pass
handler_fn = getattr(cli_mod, f"{active_provider}_command", None) or \
getattr(cli_mod, "honcho_command", None)
results.append({
"name": active_provider,
"help": help_text,
"description": description,
"setup_fn": register_cli,
"handler_fn": handler_fn,
"plugin": active_provider,
})
except Exception as e:
logger.debug("Failed to scan CLI for memory plugin '%s': %s", active_provider, e)
return results
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# ByteRover Memory Provider
Persistent memory via the `brv` CLI — hierarchical knowledge tree with tiered retrieval (fuzzy text → LLM-driven search).
## Requirements
Install the ByteRover CLI:
```bash
curl -fsSL https://byterover.dev/install.sh | sh
# or
npm install -g byterover-cli
```
## Setup
```bash
hermes memory setup # select "byterover"
```
Or manually:
```bash
hermes config set memory.provider byterover
# Optional cloud sync:
echo "BRV_API_KEY=your-key" >> ~/.hermes/.env
```
## Config
| Env Var | Required | Description |
|---------|----------|-------------|
| `BRV_API_KEY` | No | Cloud sync key (optional, local-first by default) |
Working directory: `$HERMES_HOME/byterover/` (profile-scoped).
## Tools
| Tool | Description |
|------|-------------|
| `brv_query` | Search the knowledge tree |
| `brv_curate` | Store facts, decisions, patterns |
| `brv_status` | CLI version, tree stats, sync state |
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"""ByteRover memory plugin — MemoryProvider interface.
Persistent memory via the ByteRover CLI (``brv``). Organizes knowledge into
a hierarchical context tree with tiered retrieval (fuzzy text → LLM-driven
search). Local-first with optional cloud sync.
Original PR #3499 by hieuntg81, adapted to MemoryProvider ABC.
Requires: ``brv`` CLI installed (npm install -g byterover-cli or
curl -fsSL https://byterover.dev/install.sh | sh).
Config via environment variables (profile-scoped via each profile's .env):
BRV_API_KEY — ByteRover API key (for cloud features, optional for local)
Working directory: $HERMES_HOME/byterover/ (profile-scoped context tree)
"""
from __future__ import annotations
import json
import logging
import os
import shutil
import subprocess
import threading
from pathlib import Path
from typing import Any, Dict, List, Optional
from agent.memory_provider import MemoryProvider
from tools.registry import tool_error
logger = logging.getLogger(__name__)
# Timeouts
_QUERY_TIMEOUT = 10 # brv query — should be fast
_CURATE_TIMEOUT = 120 # brv curate — may involve LLM processing
# Minimum lengths to filter noise
_MIN_QUERY_LEN = 10
_MIN_OUTPUT_LEN = 20
# ---------------------------------------------------------------------------
# brv binary resolution (cached, thread-safe)
# ---------------------------------------------------------------------------
_brv_path_lock = threading.Lock()
_cached_brv_path: Optional[str] = None
def _resolve_brv_path() -> Optional[str]:
"""Find the brv binary on PATH or well-known install locations."""
global _cached_brv_path
with _brv_path_lock:
if _cached_brv_path is not None:
return _cached_brv_path if _cached_brv_path != "" else None
found = shutil.which("brv")
if not found:
home = Path.home()
candidates = [
home / ".brv-cli" / "bin" / "brv",
Path("/usr/local/bin/brv"),
home / ".npm-global" / "bin" / "brv",
]
for c in candidates:
if c.exists():
found = str(c)
break
with _brv_path_lock:
if _cached_brv_path is not None:
return _cached_brv_path if _cached_brv_path != "" else None
_cached_brv_path = found or ""
return found
def _run_brv(args: List[str], timeout: int = _QUERY_TIMEOUT,
cwd: str = None) -> dict:
"""Run a brv CLI command. Returns {success, output, error}."""
brv_path = _resolve_brv_path()
if not brv_path:
return {"success": False, "error": "brv CLI not found. Install: npm install -g byterover-cli"}
cmd = [brv_path] + args
effective_cwd = cwd or str(_get_brv_cwd())
Path(effective_cwd).mkdir(parents=True, exist_ok=True)
env = os.environ.copy()
brv_bin_dir = str(Path(brv_path).parent)
env["PATH"] = brv_bin_dir + os.pathsep + env.get("PATH", "")
try:
result = subprocess.run(
cmd, capture_output=True, text=True,
timeout=timeout, cwd=effective_cwd, env=env,
stdin=subprocess.DEVNULL,
)
stdout = result.stdout.strip()
stderr = result.stderr.strip()
if result.returncode == 0:
return {"success": True, "output": stdout}
return {"success": False, "error": stderr or stdout or f"brv exited {result.returncode}"}
except subprocess.TimeoutExpired:
return {"success": False, "error": f"brv timed out after {timeout}s"}
except FileNotFoundError:
global _cached_brv_path
with _brv_path_lock:
_cached_brv_path = None
return {"success": False, "error": "brv CLI not found"}
except Exception as e:
return {"success": False, "error": str(e)}
def _get_brv_cwd() -> Path:
"""Profile-scoped working directory for the brv context tree."""
from hermes_constants import get_hermes_home
return get_hermes_home() / "byterover"
# ---------------------------------------------------------------------------
# Tool schemas
# ---------------------------------------------------------------------------
QUERY_SCHEMA = {
"name": "brv_query",
"description": (
"Search ByteRover's persistent knowledge tree for relevant context. "
"Returns memories, project knowledge, architectural decisions, and "
"patterns from previous sessions. Use for any question where past "
"context would help."
),
"parameters": {
"type": "object",
"properties": {
"query": {"type": "string", "description": "What to search for."},
},
"required": ["query"],
},
}
CURATE_SCHEMA = {
"name": "brv_curate",
"description": (
"Store important information in ByteRover's persistent knowledge tree. "
"Use for architectural decisions, bug fixes, user preferences, project "
"patterns — anything worth remembering across sessions. ByteRover's LLM "
"automatically categorizes and organizes the memory."
),
"parameters": {
"type": "object",
"properties": {
"content": {"type": "string", "description": "The information to remember."},
},
"required": ["content"],
},
}
STATUS_SCHEMA = {
"name": "brv_status",
"description": "Check ByteRover status — CLI version, context tree stats, cloud sync state.",
"parameters": {"type": "object", "properties": {}, "required": []},
}
# ---------------------------------------------------------------------------
# MemoryProvider implementation
# ---------------------------------------------------------------------------
class ByteRoverMemoryProvider(MemoryProvider):
"""ByteRover persistent memory via the brv CLI."""
def __init__(self):
self._cwd = ""
self._session_id = ""
self._turn_count = 0
self._sync_thread: Optional[threading.Thread] = None
@property
def name(self) -> str:
return "byterover"
def is_available(self) -> bool:
"""Check if brv CLI is installed. No network calls."""
return _resolve_brv_path() is not None
def get_config_schema(self):
return [
{
"key": "api_key",
"description": "ByteRover API key (optional, for cloud sync)",
"secret": True,
"env_var": "BRV_API_KEY",
"url": "https://app.byterover.dev",
},
]
def initialize(self, session_id: str, **kwargs) -> None:
self._cwd = str(_get_brv_cwd())
self._session_id = session_id
self._turn_count = 0
Path(self._cwd).mkdir(parents=True, exist_ok=True)
def system_prompt_block(self) -> str:
if not _resolve_brv_path():
return ""
return (
"# ByteRover Memory\n"
"Active. Persistent knowledge tree with hierarchical context.\n"
"Use brv_query to search past knowledge, brv_curate to store "
"important facts, brv_status to check state."
)
def prefetch(self, query: str, *, session_id: str = "") -> str:
"""Run brv query synchronously before the agent's first LLM call.
Blocks until the query completes (up to _QUERY_TIMEOUT seconds), ensuring
the result is available as context before the model is called.
"""
if not query or len(query.strip()) < _MIN_QUERY_LEN:
return ""
result = _run_brv(
["query", "--", query.strip()[:5000]],
timeout=_QUERY_TIMEOUT, cwd=self._cwd,
)
if result["success"] and result.get("output"):
output = result["output"].strip()
if len(output) > _MIN_OUTPUT_LEN:
return f"## ByteRover Context\n{output}"
return ""
def queue_prefetch(self, query: str, *, session_id: str = "") -> None:
"""No-op: prefetch() now runs synchronously at turn start."""
pass
def sync_turn(self, user_content: str, assistant_content: str, *, session_id: str = "") -> None:
"""Curate the conversation turn in background (non-blocking)."""
self._turn_count += 1
# Only curate substantive turns
if len(user_content.strip()) < _MIN_QUERY_LEN:
return
def _sync():
try:
combined = f"User: {user_content[:2000]}\nAssistant: {assistant_content[:2000]}"
_run_brv(
["curate", "--", combined],
timeout=_CURATE_TIMEOUT, cwd=self._cwd,
)
except Exception as e:
logger.debug("ByteRover sync failed: %s", e)
# Wait for previous sync
if self._sync_thread and self._sync_thread.is_alive():
self._sync_thread.join(timeout=5.0)
self._sync_thread = threading.Thread(
target=_sync, daemon=True, name="brv-sync"
)
self._sync_thread.start()
def on_memory_write(self, action: str, target: str, content: str) -> None:
"""Mirror built-in memory writes to ByteRover."""
if action not in {"add", "replace"} or not content:
return
def _write():
try:
label = "User profile" if target == "user" else "Agent memory"
_run_brv(
["curate", "--", f"[{label}] {content}"],
timeout=_CURATE_TIMEOUT, cwd=self._cwd,
)
except Exception as e:
logger.debug("ByteRover memory mirror failed: %s", e)
t = threading.Thread(target=_write, daemon=True, name="brv-memwrite")
t.start()
def on_pre_compress(self, messages: List[Dict[str, Any]]) -> str:
"""Extract insights before context compression discards turns."""
if not messages:
return ""
# Build a summary of messages about to be compressed
parts = []
for msg in messages[-10:]: # last 10 messages
role = msg.get("role", "")
content = msg.get("content", "")
if isinstance(content, str) and content.strip() and role in {"user", "assistant"}:
parts.append(f"{role}: {content[:500]}")
if not parts:
return ""
combined = "\n".join(parts)
def _flush():
try:
_run_brv(
["curate", "--", f"[Pre-compression context]\n{combined}"],
timeout=_CURATE_TIMEOUT, cwd=self._cwd,
)
logger.info("ByteRover pre-compression flush: %d messages", len(parts))
except Exception as e:
logger.debug("ByteRover pre-compression flush failed: %s", e)
t = threading.Thread(target=_flush, daemon=True, name="brv-flush")
t.start()
return ""
def get_tool_schemas(self) -> List[Dict[str, Any]]:
return [QUERY_SCHEMA, CURATE_SCHEMA, STATUS_SCHEMA]
def handle_tool_call(self, tool_name: str, args: dict, **kwargs) -> str:
if tool_name == "brv_query":
return self._tool_query(args)
elif tool_name == "brv_curate":
return self._tool_curate(args)
elif tool_name == "brv_status":
return self._tool_status()
return tool_error(f"Unknown tool: {tool_name}")
def shutdown(self) -> None:
if self._sync_thread and self._sync_thread.is_alive():
self._sync_thread.join(timeout=10.0)
# -- Tool implementations ------------------------------------------------
def _tool_query(self, args: dict) -> str:
query = args.get("query", "")
if not query:
return tool_error("query is required")
result = _run_brv(
["query", "--", query.strip()[:5000]],
timeout=_QUERY_TIMEOUT, cwd=self._cwd,
)
if not result["success"]:
return tool_error(result.get("error", "Query failed"))
output = result.get("output", "").strip()
if not output or len(output) < _MIN_OUTPUT_LEN:
return json.dumps({"result": "No relevant memories found."})
# Truncate very long results
if len(output) > 8000:
output = output[:8000] + "\n\n[... truncated]"
return json.dumps({"result": output})
def _tool_curate(self, args: dict) -> str:
content = args.get("content", "")
if not content:
return tool_error("content is required")
result = _run_brv(
["curate", "--", content],
timeout=_CURATE_TIMEOUT, cwd=self._cwd,
)
if not result["success"]:
return tool_error(result.get("error", "Curate failed"))
return json.dumps({"result": "Memory curated successfully."})
def _tool_status(self) -> str:
result = _run_brv(["status"], timeout=15, cwd=self._cwd)
if not result["success"]:
return tool_error(result.get("error", "Status check failed"))
return json.dumps({"status": result.get("output", "")})
# ---------------------------------------------------------------------------
# Plugin entry point
# ---------------------------------------------------------------------------
def register(ctx) -> None:
"""Register ByteRover as a memory provider plugin."""
ctx.register_memory_provider(ByteRoverMemoryProvider())
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name: byterover
version: 1.0.0
description: "ByteRover — persistent knowledge tree with tiered retrieval via the brv CLI."
external_dependencies:
- name: brv
install: "curl -fsSL https://byterover.dev/install.sh | sh"
check: "brv --version"
hooks:
- on_pre_compress
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# Hindsight Memory Provider
Long-term memory with knowledge graph, entity resolution, and multi-strategy retrieval. Supports cloud, local embedded, and local external modes.
## Requirements
- **Cloud:** API key from [ui.hindsight.vectorize.io](https://ui.hindsight.vectorize.io)
- **Local Embedded:** API key for a supported LLM provider (OpenAI, Anthropic, Gemini, Groq, OpenRouter, MiniMax, Ollama, or any OpenAI-compatible endpoint). Embeddings and reranking run locally — no additional API keys needed.
- **Local External:** A running Hindsight instance (Docker or self-hosted) reachable over HTTP.
## Setup
```bash
hermes memory setup # select "hindsight"
```
The setup wizard will install dependencies automatically via `uv` and walk you through configuration.
Or manually (cloud mode with defaults):
```bash
hermes config set memory.provider hindsight
echo "HINDSIGHT_API_KEY=your-key" >> ~/.hermes/.env
```
### Cloud
Connects to the Hindsight Cloud API. Requires an API key from [ui.hindsight.vectorize.io](https://ui.hindsight.vectorize.io).
### Local Embedded
Hermes spins up a local Hindsight daemon with built-in PostgreSQL. Requires an LLM API key for memory extraction and synthesis. The daemon starts automatically in the background on first use and stops after 5 minutes of inactivity.
Supports any OpenAI-compatible LLM endpoint (llama.cpp, vLLM, LM Studio, etc.) — pick `openai_compatible` as the provider and enter the base URL.
Daemon startup logs: `~/.hermes/logs/hindsight-embed.log`
Daemon runtime logs: `~/.hindsight/profiles/<profile>.log`
To open the Hindsight web UI (local embedded mode only):
```bash
hindsight-embed -p hermes ui start
```
### Local External
Points the plugin at an existing Hindsight instance you're already running (Docker, self-hosted, etc.). No daemon management — just a URL and an optional API key.
## Config
Config file: `~/.hermes/hindsight/config.json`
### Connection
| Key | Default | Description |
|-----|---------|-------------|
| `mode` | `cloud` | `cloud`, `local_embedded`, or `local_external` |
| `api_url` | `https://api.hindsight.vectorize.io` | API URL (cloud and local_external modes) |
### Memory Bank
| Key | Default | Description |
|-----|---------|-------------|
| `bank_id` | `hermes` | Memory bank name (static fallback used when `bank_id_template` is unset or resolves empty) |
| `bank_id_template` | — | Optional template to derive the bank name dynamically. Placeholders: `{profile}`, `{workspace}`, `{platform}`, `{user}`, `{session}`. Example: `hermes-{profile}` isolates memory per active Hermes profile. Empty placeholders collapse cleanly (e.g. `hermes-{user}` with no user becomes `hermes`). |
| `bank_mission` | — | Reflect mission (identity/framing for reflect reasoning). Applied via Banks API. |
| `bank_retain_mission` | — | Retain mission (steers what gets extracted). Applied via Banks API. |
### Recall
| Key | Default | Description |
|-----|---------|-------------|
| `recall_budget` | `mid` | Recall thoroughness: `low` / `mid` / `high` |
| `recall_prefetch_method` | `recall` | Auto-recall method: `recall` (raw facts) or `reflect` (LLM synthesis) |
| `recall_max_tokens` | `4096` | Maximum tokens for recall results |
| `recall_max_input_chars` | `800` | Maximum input query length for auto-recall |
| `recall_prompt_preamble` | — | Custom preamble for recalled memories in context |
| `recall_tags` | — | Tags to filter when searching memories |
| `recall_tags_match` | `any` | Tag matching mode: `any` / `all` / `any_strict` / `all_strict` |
| `recall_types` | `observation` | Fact types surfaced by recall (both auto-recall and the `hindsight_recall` tool). Comma-separated string or JSON list. **Default narrowed to `observation` only** (see "Behavior change" below). Set to `observation,world,experience` to also include raw facts. |
| `auto_recall` | `true` | Automatically recall memories before each turn |
> **Behavior change — `recall_types` defaults to `observation` only.**
>
> Previously recall returned all three fact types. It now returns only observations.
>
> Per [Hindsight's docs](https://hindsight.vectorize.io/developer/observations), observations are the **consolidated** knowledge layer Hindsight builds on top of raw facts: deduplicated beliefs grounded in evidence, refined as new facts arrive, with proof counts and freshness signals. Raw `world` / `experience` facts are the individual supporting evidence that feeds them. For per-turn context injection, observations are denser per token and avoid feeding the model multiple raw facts that one observation already summarizes.
>
> Restore the broad recall with `"recall_types": "observation,world,experience"` (string or JSON list) in `~/.hermes/hindsight/config.json`. This applies to **both** auto-recall and the `hindsight_recall` tool — both read the same `recall_types` setting (the tool schema has no per-call `types` argument), so narrowing the default narrows both paths.
### Retain
| Key | Default | Description |
|-----|---------|-------------|
| `auto_retain` | `true` | Automatically retain conversation turns |
| `retain_async` | `true` | Process retain asynchronously on the Hindsight server |
| `retain_every_n_turns` | `1` | Retain every N turns (1 = every turn) |
| `retain_context` | `conversation between Hermes Agent and the User` | Context label for retained memories |
| `retain_tags` | — | Default tags applied to retained memories; merged with per-call tool tags |
| `retain_source` | — | Optional `metadata.source` attached to retained memories |
| `retain_user_prefix` | `User` | Label used before user turns in auto-retained transcripts |
| `retain_assistant_prefix` | `Assistant` | Label used before assistant turns in auto-retained transcripts |
### Integration
| Key | Default | Description |
|-----|---------|-------------|
| `memory_mode` | `hybrid` | How memories are integrated into the agent |
**memory_mode:**
- `hybrid` — automatic context injection + tools available to the LLM
- `context` — automatic injection only, no tools exposed
- `tools` — tools only, no automatic injection
### Local Embedded LLM
| Key | Default | Description |
|-----|---------|-------------|
| `llm_provider` | `openai` | `openai`, `anthropic`, `gemini`, `groq`, `openrouter`, `minimax`, `ollama`, `lmstudio`, `openai_compatible` |
| `llm_model` | per-provider | Model name (e.g. `gpt-4o-mini`, `qwen/qwen3.5-9b`) |
| `llm_base_url` | — | Endpoint URL for `openai_compatible` (e.g. `http://192.168.1.10:8080/v1`) |
The LLM API key is stored in `~/.hermes/.env` as `HINDSIGHT_LLM_API_KEY`.
## Tools
Available in `hybrid` and `tools` memory modes:
| Tool | Description |
|------|-------------|
| `hindsight_retain` | Store information with auto entity extraction; supports optional per-call `tags` |
| `hindsight_recall` | Multi-strategy search (semantic + entity graph) |
| `hindsight_reflect` | Cross-memory synthesis (LLM-powered) |
## Environment Variables
| Variable | Description |
|----------|-------------|
| `HINDSIGHT_API_KEY` | API key for Hindsight Cloud |
| `HINDSIGHT_LLM_API_KEY` | LLM API key for local mode |
| `HINDSIGHT_API_LLM_BASE_URL` | LLM Base URL for local mode (e.g. OpenRouter) |
| `HINDSIGHT_API_URL` | Override API endpoint |
| `HINDSIGHT_BANK_ID` | Override bank name |
| `HINDSIGHT_BUDGET` | Override recall budget |
| `HINDSIGHT_MODE` | Override mode (`cloud`, `local_embedded`, `local_external`) |
## Client Version
Requires `hindsight-client >= 0.4.22`. The plugin auto-upgrades on session start if an older version is detected.
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name: hindsight
version: 1.0.0
description: "Hindsight — long-term memory with knowledge graph, entity resolution, and multi-strategy retrieval."
pip_dependencies:
- "hindsight-client>=0.4.22"
requires_env: []
hooks:
- on_session_end
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# Holographic Memory Provider
Local SQLite fact store with FTS5 search, trust scoring, entity resolution, and HRR-based compositional retrieval.
## Requirements
None — uses SQLite (always available). NumPy optional for HRR algebra.
## Setup
```bash
hermes memory setup # select "holographic"
```
Or manually:
```bash
hermes config set memory.provider holographic
```
## Config
Config in `config.yaml` under `plugins.hermes-memory-store`:
| Key | Default | Description |
|-----|---------|-------------|
| `db_path` | `$HERMES_HOME/memory_store.db` | SQLite database path |
| `auto_extract` | `false` | Auto-extract facts at session end |
| `default_trust` | `0.5` | Default trust score for new facts |
| `hrr_dim` | `1024` | HRR vector dimensions |
## Tools
| Tool | Description |
|------|-------------|
| `fact_store` | 9 actions: add, search, probe, related, reason, contradict, update, remove, list |
| `fact_feedback` | Rate facts as helpful/unhelpful (trains trust scores) |
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"""hermes-memory-store — holographic memory plugin using MemoryProvider interface.
Registers as a MemoryProvider plugin, giving the agent structured fact storage
with entity resolution, trust scoring, and HRR-based compositional retrieval.
Original plugin by dusterbloom (PR #2351), adapted to the MemoryProvider ABC.
Config in $HERMES_HOME/config.yaml (profile-scoped):
plugins:
hermes-memory-store:
db_path: $HERMES_HOME/memory_store.db # omit to use the default
auto_extract: false
default_trust: 0.5
min_trust_threshold: 0.3
temporal_decay_half_life: 0
"""
from __future__ import annotations
import json
import logging
import re
from typing import Any, Dict, List
from agent.memory_provider import MemoryProvider
from tools.registry import tool_error
from .store import MemoryStore
from .retrieval import FactRetriever
from hermes_cli.config import cfg_get
logger = logging.getLogger(__name__)
# ---------------------------------------------------------------------------
# Tool schemas (unchanged from original PR)
# ---------------------------------------------------------------------------
FACT_STORE_SCHEMA = {
"name": "fact_store",
"description": (
"Deep structured memory with algebraic reasoning. "
"Use alongside the memory tool — memory for always-on context, "
"fact_store for deep recall and compositional queries.\n\n"
"ACTIONS (simple → powerful):\n"
"• add — Store a fact the user would expect you to remember.\n"
"• search — Keyword lookup ('editor config', 'deploy process').\n"
"• probe — Entity recall: ALL facts about a person/thing.\n"
"• related — What connects to an entity? Structural adjacency.\n"
"• reason — Compositional: facts connected to MULTIPLE entities simultaneously.\n"
"• contradict — Memory hygiene: find facts making conflicting claims.\n"
"• update/remove/list — CRUD operations.\n\n"
"IMPORTANT: Before answering questions about the user, ALWAYS probe or reason first."
),
"parameters": {
"type": "object",
"properties": {
"action": {
"type": "string",
"enum": ["add", "search", "probe", "related", "reason", "contradict", "update", "remove", "list"],
},
"content": {"type": "string", "description": "Fact content (required for 'add')."},
"query": {"type": "string", "description": "Search query (required for 'search')."},
"entity": {"type": "string", "description": "Entity name for 'probe'/'related'."},
"entities": {"type": "array", "items": {"type": "string"}, "description": "Entity names for 'reason'."},
"fact_id": {"type": "integer", "description": "Fact ID for 'update'/'remove'."},
"category": {"type": "string", "enum": ["user_pref", "project", "tool", "general"]},
"tags": {"type": "string", "description": "Comma-separated tags."},
"trust_delta": {"type": "number", "description": "Trust adjustment for 'update'."},
"min_trust": {"type": "number", "description": "Minimum trust filter (default: 0.3)."},
"limit": {"type": "integer", "description": "Max results (default: 10)."},
},
"required": ["action"],
},
}
FACT_FEEDBACK_SCHEMA = {
"name": "fact_feedback",
"description": (
"Rate a fact after using it. Mark 'helpful' if accurate, 'unhelpful' if outdated. "
"This trains the memory — good facts rise, bad facts sink."
),
"parameters": {
"type": "object",
"properties": {
"action": {"type": "string", "enum": ["helpful", "unhelpful"]},
"fact_id": {"type": "integer", "description": "The fact ID to rate."},
},
"required": ["action", "fact_id"],
},
}
# ---------------------------------------------------------------------------
# Config
# ---------------------------------------------------------------------------
def _load_plugin_config() -> dict:
from hermes_constants import get_hermes_home
config_path = get_hermes_home() / "config.yaml"
if not config_path.exists():
return {}
try:
import yaml
with open(config_path, encoding="utf-8-sig") as f:
all_config = yaml.safe_load(f) or {}
return cfg_get(all_config, "plugins", "hermes-memory-store", default={}) or {}
except Exception:
return {}
# ---------------------------------------------------------------------------
# MemoryProvider implementation
# ---------------------------------------------------------------------------
class HolographicMemoryProvider(MemoryProvider):
"""Holographic memory with structured facts, entity resolution, and HRR retrieval."""
def __init__(self, config: dict | None = None):
self._config = config or _load_plugin_config()
self._store = None
self._retriever = None
self._min_trust = float(self._config.get("min_trust_threshold", 0.3))
@property
def name(self) -> str:
return "holographic"
def is_available(self) -> bool:
return True # SQLite is always available, numpy is optional
def save_config(self, values, hermes_home):
"""Write config to config.yaml under plugins.hermes-memory-store."""
from pathlib import Path
config_path = Path(hermes_home) / "config.yaml"
try:
import yaml
existing = {}
if config_path.exists():
with open(config_path, encoding="utf-8-sig") as f:
existing = yaml.safe_load(f) or {}
existing.setdefault("plugins", {})
existing["plugins"]["hermes-memory-store"] = values
with open(config_path, "w", encoding="utf-8") as f:
yaml.dump(existing, f, default_flow_style=False)
except Exception:
pass
def get_config_schema(self):
from hermes_constants import display_hermes_home
_default_db = f"{display_hermes_home()}/memory_store.db"
return [
{"key": "db_path", "description": "SQLite database path", "default": _default_db},
{"key": "auto_extract", "description": "Auto-extract facts at session end", "default": "false", "choices": ["true", "false"]},
{"key": "default_trust", "description": "Default trust score for new facts", "default": "0.5"},
{"key": "hrr_dim", "description": "HRR vector dimensions", "default": "1024"},
]
def initialize(self, session_id: str, **kwargs) -> None:
from hermes_constants import get_hermes_home
_hermes_home = str(get_hermes_home())
_default_db = _hermes_home + "/memory_store.db"
db_path = self._config.get("db_path", _default_db)
# Expand $HERMES_HOME in user-supplied paths so config values like
# "$HERMES_HOME/memory_store.db" or "~/.hermes/memory_store.db" both
# resolve to the active profile's directory.
if isinstance(db_path, str):
db_path = db_path.replace("$HERMES_HOME", _hermes_home)
db_path = db_path.replace("${HERMES_HOME}", _hermes_home)
default_trust = float(self._config.get("default_trust", 0.5))
hrr_dim = int(self._config.get("hrr_dim", 1024))
hrr_weight = float(self._config.get("hrr_weight", 0.3))
temporal_decay = int(self._config.get("temporal_decay_half_life", 0))
self._store = MemoryStore(db_path=db_path, default_trust=default_trust, hrr_dim=hrr_dim)
self._retriever = FactRetriever(
store=self._store,
temporal_decay_half_life=temporal_decay,
hrr_weight=hrr_weight,
hrr_dim=hrr_dim,
)
self._session_id = session_id
def system_prompt_block(self) -> str:
if not self._store:
return ""
try:
total = self._store._conn.execute(
"SELECT COUNT(*) FROM facts"
).fetchone()[0]
except Exception:
total = 0
if total == 0:
return (
"# Holographic Memory\n"
"Active. Empty fact store — proactively add facts the user would expect you to remember.\n"
"Use fact_store(action='add') to store durable structured facts about people, projects, preferences, decisions.\n"
"Use fact_feedback to rate facts after using them (trains trust scores)."
)
return (
f"# Holographic Memory\n"
f"Active. {total} facts stored with entity resolution and trust scoring.\n"
f"Use fact_store to search, probe entities, reason across entities, or add facts.\n"
f"Use fact_feedback to rate facts after using them (trains trust scores)."
)
def prefetch(self, query: str, *, session_id: str = "") -> str:
if not self._retriever or not query:
return ""
try:
results = self._retriever.search(query, min_trust=self._min_trust, limit=5)
if not results:
return ""
lines = []
for r in results:
trust = r.get("trust_score", r.get("trust", 0))
lines.append(f"- [{trust:.1f}] {r.get('content', '')}")
return "## Holographic Memory\n" + "\n".join(lines)
except Exception as e:
logger.debug("Holographic prefetch failed: %s", e)
return ""
def sync_turn(self, user_content: str, assistant_content: str, *, session_id: str = "") -> None:
# Holographic memory stores explicit facts via tools, not auto-sync.
# The on_session_end hook handles auto-extraction if configured.
pass
def get_tool_schemas(self) -> List[Dict[str, Any]]:
return [FACT_STORE_SCHEMA, FACT_FEEDBACK_SCHEMA]
def handle_tool_call(self, tool_name: str, args: Dict[str, Any], **kwargs) -> str:
if tool_name == "fact_store":
return self._handle_fact_store(args)
elif tool_name == "fact_feedback":
return self._handle_fact_feedback(args)
return tool_error(f"Unknown tool: {tool_name}")
def on_session_end(self, messages: List[Dict[str, Any]]) -> None:
if not self._config.get("auto_extract", False):
return
if not self._store or not messages:
return
self._auto_extract_facts(messages)
def on_memory_write(self, action: str, target: str, content: str) -> None:
"""Mirror built-in memory writes as facts."""
if action == "add" and self._store and content:
try:
category = "user_pref" if target == "user" else "general"
self._store.add_fact(content, category=category)
except Exception as e:
logger.debug("Holographic memory_write mirror failed: %s", e)
def shutdown(self) -> None:
self._store = None
self._retriever = None
# -- Tool handlers -------------------------------------------------------
def _handle_fact_store(self, args: dict) -> str:
try:
action = args["action"]
store = self._store
retriever = self._retriever
if action == "add":
fact_id = store.add_fact(
args["content"],
category=args.get("category", "general"),
tags=args.get("tags", ""),
)
return json.dumps({"fact_id": fact_id, "status": "added"})
elif action == "search":
results = retriever.search(
args["query"],
category=args.get("category"),
min_trust=float(args.get("min_trust", self._min_trust)),
limit=int(args.get("limit", 10)),
)
return json.dumps({"results": results, "count": len(results)})
elif action == "probe":
results = retriever.probe(
args["entity"],
category=args.get("category"),
limit=int(args.get("limit", 10)),
)
return json.dumps({"results": results, "count": len(results)})
elif action == "related":
results = retriever.related(
args["entity"],
category=args.get("category"),
limit=int(args.get("limit", 10)),
)
return json.dumps({"results": results, "count": len(results)})
elif action == "reason":
entities = args.get("entities", [])
if not entities:
return tool_error("reason requires 'entities' list")
results = retriever.reason(
entities,
category=args.get("category"),
limit=int(args.get("limit", 10)),
)
return json.dumps({"results": results, "count": len(results)})
elif action == "contradict":
results = retriever.contradict(
category=args.get("category"),
limit=int(args.get("limit", 10)),
)
return json.dumps({"results": results, "count": len(results)})
elif action == "update":
updated = store.update_fact(
int(args["fact_id"]),
content=args.get("content"),
trust_delta=float(args["trust_delta"]) if "trust_delta" in args else None,
tags=args.get("tags"),
category=args.get("category"),
)
return json.dumps({"updated": updated})
elif action == "remove":
removed = store.remove_fact(int(args["fact_id"]))
return json.dumps({"removed": removed})
elif action == "list":
facts = store.list_facts(
category=args.get("category"),
min_trust=float(args.get("min_trust", 0.0)),
limit=int(args.get("limit", 10)),
)
return json.dumps({"facts": facts, "count": len(facts)})
else:
return tool_error(f"Unknown action: {action}")
except KeyError as exc:
return tool_error(f"Missing required argument: {exc}")
except Exception as exc:
return tool_error(str(exc))
def _handle_fact_feedback(self, args: dict) -> str:
try:
fact_id = int(args["fact_id"])
helpful = args["action"] == "helpful"
result = self._store.record_feedback(fact_id, helpful=helpful)
return json.dumps(result)
except KeyError as exc:
return tool_error(f"Missing required argument: {exc}")
except Exception as exc:
return tool_error(str(exc))
# -- Auto-extraction (on_session_end) ------------------------------------
def _auto_extract_facts(self, messages: list) -> None:
_PREF_PATTERNS = [
re.compile(r'\bI\s+(?:prefer|like|love|use|want|need)\s+(.+)', re.IGNORECASE),
re.compile(r'\bmy\s+(?:favorite|preferred|default)\s+\w+\s+is\s+(.+)', re.IGNORECASE),
re.compile(r'\bI\s+(?:always|never|usually)\s+(.+)', re.IGNORECASE),
]
_DECISION_PATTERNS = [
re.compile(r'\bwe\s+(?:decided|agreed|chose)\s+(?:to\s+)?(.+)', re.IGNORECASE),
re.compile(r'\bthe\s+project\s+(?:uses|needs|requires)\s+(.+)', re.IGNORECASE),
]
extracted = 0
for msg in messages:
if msg.get("role") != "user":
continue
content = msg.get("content", "")
if not isinstance(content, str) or len(content) < 10:
continue
for pattern in _PREF_PATTERNS:
if pattern.search(content):
try:
self._store.add_fact(content[:400], category="user_pref")
extracted += 1
except Exception:
pass
break
for pattern in _DECISION_PATTERNS:
if pattern.search(content):
try:
self._store.add_fact(content[:400], category="project")
extracted += 1
except Exception:
pass
break
if extracted:
logger.info("Auto-extracted %d facts from conversation", extracted)
# ---------------------------------------------------------------------------
# Plugin entry point
# ---------------------------------------------------------------------------
def register(ctx) -> None:
"""Register the holographic memory provider with the plugin system."""
config = _load_plugin_config()
provider = HolographicMemoryProvider(config=config)
ctx.register_memory_provider(provider)
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"""Holographic Reduced Representations (HRR) with phase encoding.
HRRs are a vector symbolic architecture for encoding compositional structure
into fixed-width distributed representations. This module uses *phase vectors*:
each concept is a vector of angles in [0, 2π). The algebraic operations are:
bind — circular convolution (phase addition) — associates two concepts
unbind — circular correlation (phase subtraction) — retrieves a bound value
bundle — superposition (circular mean) — merges multiple concepts
Phase encoding is numerically stable, avoids the magnitude collapse of
traditional complex-number HRRs, and maps cleanly to cosine similarity.
Atoms are generated deterministically from SHA-256 so representations are
identical across processes, machines, and language versions.
References:
Plate (1995) — Holographic Reduced Representations
Gayler (2004) — Vector Symbolic Architectures answer Jackendoff's challenges
"""
import hashlib
import logging
import struct
import math
try:
import numpy as np
_HAS_NUMPY = True
except ImportError:
_HAS_NUMPY = False
logger = logging.getLogger(__name__)
_TWO_PI = 2.0 * math.pi
def _require_numpy() -> None:
if not _HAS_NUMPY:
raise RuntimeError("numpy is required for holographic operations")
def encode_atom(word: str, dim: int = 1024) -> "np.ndarray":
"""Deterministic phase vector via SHA-256 counter blocks.
Uses hashlib (not numpy RNG) for cross-platform reproducibility.
Algorithm:
- Generate enough SHA-256 blocks by hashing f"{word}:{i}" for i=0,1,2,...
- Concatenate digests, interpret as uint16 values via struct.unpack
- Scale to [0, 2π): phases = values * (2π / 65536)
- Truncate to dim elements
- Returns np.float64 array of shape (dim,)
"""
_require_numpy()
# Each SHA-256 digest is 32 bytes = 16 uint16 values.
values_per_block = 16
blocks_needed = math.ceil(dim / values_per_block)
uint16_values: list[int] = []
for i in range(blocks_needed):
digest = hashlib.sha256(f"{word}:{i}".encode()).digest()
uint16_values.extend(struct.unpack("<16H", digest))
phases = np.array(uint16_values[:dim], dtype=np.float64) * (_TWO_PI / 65536.0)
return phases
def bind(a: "np.ndarray", b: "np.ndarray") -> "np.ndarray":
"""Circular convolution = element-wise phase addition.
Binding associates two concepts into a single composite vector.
The result is dissimilar to both inputs (quasi-orthogonal).
"""
_require_numpy()
return (a + b) % _TWO_PI
def unbind(memory: "np.ndarray", key: "np.ndarray") -> "np.ndarray":
"""Circular correlation = element-wise phase subtraction.
Unbinding retrieves the value associated with a key from a memory vector.
unbind(bind(a, b), a) ≈ b (up to superposition noise)
"""
_require_numpy()
return (memory - key) % _TWO_PI
def bundle(*vectors: "np.ndarray") -> "np.ndarray":
"""Superposition via circular mean of complex exponentials.
Bundling merges multiple vectors into one that is similar to each input.
The result can hold O(sqrt(dim)) items before similarity degrades.
"""
_require_numpy()
complex_sum = np.sum([np.exp(1j * v) for v in vectors], axis=0)
return np.angle(complex_sum) % _TWO_PI
def similarity(a: "np.ndarray", b: "np.ndarray") -> float:
"""Phase cosine similarity. Range [-1, 1].
Returns 1.0 for identical vectors, near 0.0 for random (unrelated) vectors,
and -1.0 for perfectly anti-correlated vectors.
"""
_require_numpy()
return float(np.mean(np.cos(a - b)))
def encode_text(text: str, dim: int = 1024) -> "np.ndarray":
"""Bag-of-words: bundle of atom vectors for each token.
Tokenizes by lowercasing, splitting on whitespace, and stripping
leading/trailing punctuation from each token.
Returns bundle of all token atom vectors.
If text is empty or produces no tokens, returns encode_atom("__hrr_empty__", dim).
"""
_require_numpy()
tokens = [
token.strip(".,!?;:\"'()[]{}")
for token in text.lower().split()
]
tokens = [t for t in tokens if t]
if not tokens:
return encode_atom("__hrr_empty__", dim)
atom_vectors = [encode_atom(token, dim) for token in tokens]
return bundle(*atom_vectors)
def encode_fact(content: str, entities: list[str], dim: int = 1024) -> "np.ndarray":
"""Structured encoding: content bound to ROLE_CONTENT, each entity bound to ROLE_ENTITY, all bundled.
Role vectors are reserved atoms: "__hrr_role_content__", "__hrr_role_entity__"
Components:
1. bind(encode_text(content, dim), encode_atom("__hrr_role_content__", dim))
2. For each entity: bind(encode_atom(entity.lower(), dim), encode_atom("__hrr_role_entity__", dim))
3. bundle all components together
This enables algebraic extraction:
unbind(fact, bind(entity, ROLE_ENTITY)) ≈ content_vector
"""
_require_numpy()
role_content = encode_atom("__hrr_role_content__", dim)
role_entity = encode_atom("__hrr_role_entity__", dim)
components: list[np.ndarray] = [
bind(encode_text(content, dim), role_content)
]
for entity in entities:
components.append(bind(encode_atom(entity.lower(), dim), role_entity))
return bundle(*components)
def phases_to_bytes(phases: "np.ndarray") -> bytes:
"""Serialize phase vector to bytes. float64 tobytes — 8 KB at dim=1024."""
_require_numpy()
return phases.tobytes()
def bytes_to_phases(data: bytes) -> "np.ndarray":
"""Deserialize bytes back to phase vector. Inverse of phases_to_bytes.
The .copy() call is required because frombuffer returns a read-only view
backed by the bytes object; callers expect a mutable array.
"""
_require_numpy()
return np.frombuffer(data, dtype=np.float64).copy()
def snr_estimate(dim: int, n_items: int) -> float:
"""Signal-to-noise ratio estimate for holographic storage.
SNR = sqrt(dim / n_items) when n_items > 0, else inf.
The SNR falls below 2.0 when n_items > dim / 4, meaning retrieval
errors become likely. Logs a warning when this threshold is crossed.
"""
_require_numpy()
if n_items <= 0:
return float("inf")
snr = math.sqrt(dim / n_items)
if snr < 2.0:
logger.warning(
"HRR storage near capacity: SNR=%.2f (dim=%d, n_items=%d). "
"Retrieval accuracy may degrade. Consider increasing dim or reducing stored items.",
snr,
dim,
n_items,
)
return snr
+5
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@@ -0,0 +1,5 @@
name: holographic
version: 0.1.0
description: "Holographic memory — local SQLite fact store with FTS5 search, trust scoring, and HRR-based compositional retrieval."
hooks:
- on_session_end
+593
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@@ -0,0 +1,593 @@
"""Hybrid keyword/BM25 retrieval for the memory store.
Ported from KIK memory_agent.py — combines FTS5 full-text search with
Jaccard similarity reranking and trust-weighted scoring.
"""
from __future__ import annotations
import math
from datetime import datetime, timezone
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from .store import MemoryStore
try:
from . import holographic as hrr
except ImportError:
import holographic as hrr # type: ignore[no-redef]
class FactRetriever:
"""Multi-strategy fact retrieval with trust-weighted scoring."""
def __init__(
self,
store: MemoryStore,
temporal_decay_half_life: int = 0, # days, 0 = disabled
fts_weight: float = 0.4,
jaccard_weight: float = 0.3,
hrr_weight: float = 0.3,
hrr_dim: int = 1024,
):
self.store = store
self.half_life = temporal_decay_half_life
self.hrr_dim = hrr_dim
# Auto-redistribute weights if numpy unavailable
if hrr_weight > 0 and not hrr._HAS_NUMPY:
fts_weight = 0.6
jaccard_weight = 0.4
hrr_weight = 0.0
self.fts_weight = fts_weight
self.jaccard_weight = jaccard_weight
self.hrr_weight = hrr_weight
def search(
self,
query: str,
category: str | None = None,
min_trust: float = 0.3,
limit: int = 10,
) -> list[dict]:
"""Hybrid search: FTS5 candidates → Jaccard rerank → trust weighting.
Pipeline:
1. FTS5 search: Get limit*3 candidates from SQLite full-text search
2. Jaccard boost: Token overlap between query and fact content
3. Trust weighting: final_score = relevance * trust_score
4. Temporal decay (optional): decay = 0.5^(age_days / half_life)
Returns list of dicts with fact data + 'score' field, sorted by score desc.
"""
# Stage 1: Get FTS5 candidates (more than limit for reranking headroom)
candidates = self._fts_candidates(query, category, min_trust, limit * 3)
if not candidates:
return []
# Stage 2: Rerank with Jaccard + trust + optional decay
query_tokens = self._tokenize(query)
scored = []
for fact in candidates:
content_tokens = self._tokenize(fact["content"])
tag_tokens = self._tokenize(fact.get("tags", ""))
all_tokens = content_tokens | tag_tokens
jaccard = self._jaccard_similarity(query_tokens, all_tokens)
fts_score = fact.get("fts_rank", 0.0)
# HRR similarity
if self.hrr_weight > 0 and fact.get("hrr_vector"):
fact_vec = hrr.bytes_to_phases(fact["hrr_vector"])
query_vec = hrr.encode_text(query, self.hrr_dim)
hrr_sim = (hrr.similarity(query_vec, fact_vec) + 1.0) / 2.0 # shift to [0,1]
else:
hrr_sim = 0.5 # neutral
# Combine FTS5 + Jaccard + HRR
relevance = (self.fts_weight * fts_score
+ self.jaccard_weight * jaccard
+ self.hrr_weight * hrr_sim)
# Trust weighting
score = relevance * fact["trust_score"]
# Optional temporal decay
if self.half_life > 0:
score *= self._temporal_decay(fact.get("updated_at") or fact.get("created_at"))
fact["score"] = score
scored.append(fact)
# Sort by score descending, return top limit
scored.sort(key=lambda x: x["score"], reverse=True)
results = scored[:limit]
# Strip raw HRR bytes — callers expect JSON-serializable dicts
for fact in results:
fact.pop("hrr_vector", None)
return results
def probe(
self,
entity: str,
category: str | None = None,
limit: int = 10,
) -> list[dict]:
"""Compositional entity query using HRR algebra.
Unbinds entity from memory bank to extract associated content.
This is NOT keyword search — it uses algebraic structure to find facts
where the entity plays a structural role.
Falls back to FTS5 search if numpy unavailable.
"""
if not hrr._HAS_NUMPY:
# Fallback to keyword search on entity name
return self.search(entity, category=category, limit=limit)
conn = self.store._conn
# Encode entity as role-bound vector
role_entity = hrr.encode_atom("__hrr_role_entity__", self.hrr_dim)
entity_vec = hrr.encode_atom(entity.lower(), self.hrr_dim)
probe_key = hrr.bind(entity_vec, role_entity)
# Try category-specific bank first, then all facts
if category:
bank_name = f"cat:{category}"
bank_row = conn.execute(
"SELECT vector FROM memory_banks WHERE bank_name = ?",
(bank_name,),
).fetchone()
if bank_row:
bank_vec = hrr.bytes_to_phases(bank_row["vector"])
extracted = hrr.unbind(bank_vec, probe_key)
# Use extracted signal to score individual facts
return self._score_facts_by_vector(
extracted, category=category, limit=limit
)
# Score against individual fact vectors directly
where = "WHERE hrr_vector IS NOT NULL"
params: list = []
if category:
where += " AND category = ?"
params.append(category)
rows = conn.execute(
f"""
SELECT fact_id, content, category, tags, trust_score,
retrieval_count, helpful_count, created_at, updated_at,
hrr_vector
FROM facts
{where}
""",
params,
).fetchall()
if not rows:
# Final fallback: keyword search
return self.search(entity, category=category, limit=limit)
scored = []
for row in rows:
fact = dict(row)
fact_vec = hrr.bytes_to_phases(fact.pop("hrr_vector"))
# Unbind probe key from fact to see if entity is structurally present
residual = hrr.unbind(fact_vec, probe_key)
# Compare residual against content signal
role_content = hrr.encode_atom("__hrr_role_content__", self.hrr_dim)
content_vec = hrr.bind(hrr.encode_text(fact["content"], self.hrr_dim), role_content)
sim = hrr.similarity(residual, content_vec)
fact["score"] = (sim + 1.0) / 2.0 * fact["trust_score"]
scored.append(fact)
scored.sort(key=lambda x: x["score"], reverse=True)
return scored[:limit]
def related(
self,
entity: str,
category: str | None = None,
limit: int = 10,
) -> list[dict]:
"""Discover facts that share structural connections with an entity.
Unlike probe (which finds facts *about* an entity), related finds
facts that are connected through shared context — e.g., other entities
mentioned alongside this one, or content that overlaps structurally.
Falls back to FTS5 search if numpy unavailable.
"""
if not hrr._HAS_NUMPY:
return self.search(entity, category=category, limit=limit)
conn = self.store._conn
# Encode entity as a bare atom (not role-bound — we want ANY structural match)
entity_vec = hrr.encode_atom(entity.lower(), self.hrr_dim)
# Get all facts with vectors
where = "WHERE hrr_vector IS NOT NULL"
params: list = []
if category:
where += " AND category = ?"
params.append(category)
rows = conn.execute(
f"""
SELECT fact_id, content, category, tags, trust_score,
retrieval_count, helpful_count, created_at, updated_at,
hrr_vector
FROM facts
{where}
""",
params,
).fetchall()
if not rows:
return self.search(entity, category=category, limit=limit)
# Score each fact by how much the entity's atom appears in its vector
# This catches both role-bound entity matches AND content word matches
scored = []
for row in rows:
fact = dict(row)
fact_vec = hrr.bytes_to_phases(fact.pop("hrr_vector"))
# Check structural similarity: unbind entity from fact
residual = hrr.unbind(fact_vec, entity_vec)
# A high-similarity residual to ANY known role vector means this entity
# plays a structural role in the fact
role_entity = hrr.encode_atom("__hrr_role_entity__", self.hrr_dim)
role_content = hrr.encode_atom("__hrr_role_content__", self.hrr_dim)
entity_role_sim = hrr.similarity(residual, role_entity)
content_role_sim = hrr.similarity(residual, role_content)
# Take the max — entity could appear in either role
best_sim = max(entity_role_sim, content_role_sim)
fact["score"] = (best_sim + 1.0) / 2.0 * fact["trust_score"]
scored.append(fact)
scored.sort(key=lambda x: x["score"], reverse=True)
return scored[:limit]
def reason(
self,
entities: list[str],
category: str | None = None,
limit: int = 10,
) -> list[dict]:
"""Multi-entity compositional query — vector-space JOIN.
Given multiple entities, algebraically intersects their structural
connections to find facts related to ALL of them simultaneously.
This is compositional reasoning that no embedding DB can do.
Example: reason(["peppi", "backend"]) finds facts where peppi AND
backend both play structural roles — without keyword matching.
Falls back to FTS5 search if numpy unavailable.
"""
if not hrr._HAS_NUMPY or not entities:
# Fallback: search with all entities as keywords
query = " ".join(entities)
return self.search(query, category=category, limit=limit)
conn = self.store._conn
role_entity = hrr.encode_atom("__hrr_role_entity__", self.hrr_dim)
# For each entity, compute what the bank "remembers" about it
# by unbinding entity+role from each fact vector
entity_residuals = []
for entity in entities:
entity_vec = hrr.encode_atom(entity.lower(), self.hrr_dim)
probe_key = hrr.bind(entity_vec, role_entity)
entity_residuals.append(probe_key)
# Get all facts with vectors
where = "WHERE hrr_vector IS NOT NULL"
params: list = []
if category:
where += " AND category = ?"
params.append(category)
rows = conn.execute(
f"""
SELECT fact_id, content, category, tags, trust_score,
retrieval_count, helpful_count, created_at, updated_at,
hrr_vector
FROM facts
{where}
""",
params,
).fetchall()
if not rows:
query = " ".join(entities)
return self.search(query, category=category, limit=limit)
# Score each fact by how much EACH entity is structurally present.
# A fact scores high only if ALL entities have structural presence
# (AND semantics via min, vs OR which would use mean/max).
role_content = hrr.encode_atom("__hrr_role_content__", self.hrr_dim)
scored = []
for row in rows:
fact = dict(row)
fact_vec = hrr.bytes_to_phases(fact.pop("hrr_vector"))
entity_scores = []
for probe_key in entity_residuals:
residual = hrr.unbind(fact_vec, probe_key)
sim = hrr.similarity(residual, role_content)
entity_scores.append(sim)
min_sim = min(entity_scores)
fact["score"] = (min_sim + 1.0) / 2.0 * fact["trust_score"]
scored.append(fact)
scored.sort(key=lambda x: x["score"], reverse=True)
return scored[:limit]
def contradict(
self,
category: str | None = None,
threshold: float = 0.3,
limit: int = 10,
) -> list[dict]:
"""Find potentially contradictory facts via entity overlap + content divergence.
Two facts contradict when they share entities (same subject) but have
low content-vector similarity (different claims). This is automated
memory hygiene — no other memory system does this.
Returns pairs of facts with a contradiction score.
Falls back to empty list if numpy unavailable.
"""
if not hrr._HAS_NUMPY:
return []
conn = self.store._conn
# Get all facts with vectors and their linked entities
where = "WHERE f.hrr_vector IS NOT NULL"
params: list = []
if category:
where += " AND f.category = ?"
params.append(category)
rows = conn.execute(
f"""
SELECT f.fact_id, f.content, f.category, f.tags, f.trust_score,
f.created_at, f.updated_at, f.hrr_vector
FROM facts f
{where}
""",
params,
).fetchall()
if len(rows) < 2:
return []
# Guard against O(n²) explosion on large fact stores.
# At 500 facts, that's ~125K comparisons — acceptable.
# Above that, only check the most recently updated facts.
_MAX_CONTRADICT_FACTS = 500
if len(rows) > _MAX_CONTRADICT_FACTS:
rows = sorted(rows, key=lambda r: r["updated_at"] or r["created_at"], reverse=True)
rows = rows[:_MAX_CONTRADICT_FACTS]
# Build entity sets per fact
fact_entities: dict[int, set[str]] = {}
for row in rows:
fid = row["fact_id"]
entity_rows = conn.execute(
"""
SELECT e.name FROM entities e
JOIN fact_entities fe ON fe.entity_id = e.entity_id
WHERE fe.fact_id = ?
""",
(fid,),
).fetchall()
fact_entities[fid] = {r["name"].lower() for r in entity_rows}
# Compare all pairs: high entity overlap + low content similarity = contradiction
facts = [dict(r) for r in rows]
contradictions = []
for i in range(len(facts)):
for j in range(i + 1, len(facts)):
f1, f2 = facts[i], facts[j]
ents1 = fact_entities.get(f1["fact_id"], set())
ents2 = fact_entities.get(f2["fact_id"], set())
if not ents1 or not ents2:
continue
# Entity overlap (Jaccard)
entity_overlap = len(ents1 & ents2) / len(ents1 | ents2) if (ents1 | ents2) else 0.0
if entity_overlap < 0.3:
continue # Not enough entity overlap to be contradictory
# Content similarity via HRR vectors
v1 = hrr.bytes_to_phases(f1["hrr_vector"])
v2 = hrr.bytes_to_phases(f2["hrr_vector"])
content_sim = hrr.similarity(v1, v2)
# High entity overlap + low content similarity = potential contradiction
# contradiction_score: higher = more contradictory
contradiction_score = entity_overlap * (1.0 - (content_sim + 1.0) / 2.0)
if contradiction_score >= threshold:
# Strip hrr_vector from output (not JSON serializable)
f1_clean = {k: v for k, v in f1.items() if k != "hrr_vector"}
f2_clean = {k: v for k, v in f2.items() if k != "hrr_vector"}
contradictions.append({
"fact_a": f1_clean,
"fact_b": f2_clean,
"entity_overlap": round(entity_overlap, 3),
"content_similarity": round(content_sim, 3),
"contradiction_score": round(contradiction_score, 3),
"shared_entities": sorted(ents1 & ents2),
})
contradictions.sort(key=lambda x: x["contradiction_score"], reverse=True)
return contradictions[:limit]
def _score_facts_by_vector(
self,
target_vec: "np.ndarray",
category: str | None = None,
limit: int = 10,
) -> list[dict]:
"""Score facts by similarity to a target vector."""
conn = self.store._conn
where = "WHERE hrr_vector IS NOT NULL"
params: list = []
if category:
where += " AND category = ?"
params.append(category)
rows = conn.execute(
f"""
SELECT fact_id, content, category, tags, trust_score,
retrieval_count, helpful_count, created_at, updated_at,
hrr_vector
FROM facts
{where}
""",
params,
).fetchall()
scored = []
for row in rows:
fact = dict(row)
fact_vec = hrr.bytes_to_phases(fact.pop("hrr_vector"))
sim = hrr.similarity(target_vec, fact_vec)
fact["score"] = (sim + 1.0) / 2.0 * fact["trust_score"]
scored.append(fact)
scored.sort(key=lambda x: x["score"], reverse=True)
return scored[:limit]
def _fts_candidates(
self,
query: str,
category: str | None,
min_trust: float,
limit: int,
) -> list[dict]:
"""Get raw FTS5 candidates from the store.
Uses the store's database connection directly for FTS5 MATCH
with rank scoring. Normalizes FTS5 rank to [0, 1] range.
"""
conn = self.store._conn
# Build query - FTS5 rank is negative (lower = better match)
# We need to join facts_fts with facts to get all columns
params: list = []
where_clauses = ["facts_fts MATCH ?"]
params.append(query)
if category:
where_clauses.append("f.category = ?")
params.append(category)
where_clauses.append("f.trust_score >= ?")
params.append(min_trust)
where_sql = " AND ".join(where_clauses)
sql = f"""
SELECT f.*, facts_fts.rank as fts_rank_raw
FROM facts_fts
JOIN facts f ON f.fact_id = facts_fts.rowid
WHERE {where_sql}
ORDER BY facts_fts.rank
LIMIT ?
"""
params.append(limit)
try:
rows = conn.execute(sql, params).fetchall()
except Exception:
# FTS5 MATCH can fail on malformed queries — fall back to empty
return []
if not rows:
return []
# Normalize FTS5 rank: rank is negative, lower = better
# Convert to positive score in [0, 1] range
raw_ranks = [abs(row["fts_rank_raw"]) for row in rows]
max_rank = max(raw_ranks) if raw_ranks else 1.0
max_rank = max(max_rank, 1e-6) # avoid div by zero
results = []
for row, raw_rank in zip(rows, raw_ranks):
fact = dict(row)
fact.pop("fts_rank_raw", None)
fact["fts_rank"] = raw_rank / max_rank # normalize to [0, 1]
results.append(fact)
return results
@staticmethod
def _tokenize(text: str) -> set[str]:
"""Simple whitespace tokenization with lowercasing.
Strips common punctuation. No stemming/lemmatization (Phase 1).
"""
if not text:
return set()
# Split on whitespace, lowercase, strip punctuation
tokens = set()
for word in text.lower().split():
cleaned = word.strip(".,;:!?\"'()[]{}#@<>")
if cleaned:
tokens.add(cleaned)
return tokens
@staticmethod
def _jaccard_similarity(set_a: set, set_b: set) -> float:
"""Jaccard similarity coefficient: |A ∩ B| / |A B|."""
if not set_a or not set_b:
return 0.0
intersection = len(set_a & set_b)
union = len(set_a | set_b)
return intersection / union if union > 0 else 0.0
def _temporal_decay(self, timestamp_str: str | None) -> float:
"""Exponential decay: 0.5^(age_days / half_life_days).
Returns 1.0 if decay is disabled or timestamp is missing.
"""
if not self.half_life or not timestamp_str:
return 1.0
try:
if isinstance(timestamp_str, str):
# Parse ISO format timestamp from SQLite
ts = datetime.fromisoformat(timestamp_str.replace("Z", "+00:00"))
else:
ts = timestamp_str
if ts.tzinfo is None:
ts = ts.replace(tzinfo=timezone.utc)
age_days = (datetime.now(timezone.utc) - ts).total_seconds() / 86400
if age_days < 0:
return 1.0
return math.pow(0.5, age_days / self.half_life)
except (ValueError, TypeError):
return 1.0
+578
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@@ -0,0 +1,578 @@
"""
SQLite-backed fact store with entity resolution and trust scoring.
Single-user Hermes memory store plugin.
"""
import re
import sqlite3
import threading
from pathlib import Path
try:
from . import holographic as hrr
except ImportError:
import holographic as hrr # type: ignore[no-redef]
_SCHEMA = """
CREATE TABLE IF NOT EXISTS facts (
fact_id INTEGER PRIMARY KEY AUTOINCREMENT,
content TEXT NOT NULL UNIQUE,
category TEXT DEFAULT 'general',
tags TEXT DEFAULT '',
trust_score REAL DEFAULT 0.5,
retrieval_count INTEGER DEFAULT 0,
helpful_count INTEGER DEFAULT 0,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
hrr_vector BLOB
);
CREATE TABLE IF NOT EXISTS entities (
entity_id INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT NOT NULL,
entity_type TEXT DEFAULT 'unknown',
aliases TEXT DEFAULT '',
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
CREATE TABLE IF NOT EXISTS fact_entities (
fact_id INTEGER REFERENCES facts(fact_id),
entity_id INTEGER REFERENCES entities(entity_id),
PRIMARY KEY (fact_id, entity_id)
);
CREATE INDEX IF NOT EXISTS idx_facts_trust ON facts(trust_score DESC);
CREATE INDEX IF NOT EXISTS idx_facts_category ON facts(category);
CREATE INDEX IF NOT EXISTS idx_entities_name ON entities(name);
CREATE VIRTUAL TABLE IF NOT EXISTS facts_fts
USING fts5(content, tags, content=facts, content_rowid=fact_id);
CREATE TRIGGER IF NOT EXISTS facts_ai AFTER INSERT ON facts BEGIN
INSERT INTO facts_fts(rowid, content, tags)
VALUES (new.fact_id, new.content, new.tags);
END;
CREATE TRIGGER IF NOT EXISTS facts_ad AFTER DELETE ON facts BEGIN
INSERT INTO facts_fts(facts_fts, rowid, content, tags)
VALUES ('delete', old.fact_id, old.content, old.tags);
END;
CREATE TRIGGER IF NOT EXISTS facts_au AFTER UPDATE ON facts BEGIN
INSERT INTO facts_fts(facts_fts, rowid, content, tags)
VALUES ('delete', old.fact_id, old.content, old.tags);
INSERT INTO facts_fts(rowid, content, tags)
VALUES (new.fact_id, new.content, new.tags);
END;
CREATE TABLE IF NOT EXISTS memory_banks (
bank_id INTEGER PRIMARY KEY AUTOINCREMENT,
bank_name TEXT NOT NULL UNIQUE,
vector BLOB NOT NULL,
dim INTEGER NOT NULL,
fact_count INTEGER DEFAULT 0,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
"""
# Trust adjustment constants
_HELPFUL_DELTA = 0.05
_UNHELPFUL_DELTA = -0.10
_TRUST_MIN = 0.0
_TRUST_MAX = 1.0
# Entity extraction patterns
_RE_CAPITALIZED = re.compile(r'\b([A-Z][a-z]+(?:\s+[A-Z][a-z]+)+)\b')
_RE_DOUBLE_QUOTE = re.compile(r'"([^"]+)"')
_RE_SINGLE_QUOTE = re.compile(r"'([^']+)'")
_RE_AKA = re.compile(
r'(\w+(?:\s+\w+)*)\s+(?:aka|also known as)\s+(\w+(?:\s+\w+)*)',
re.IGNORECASE,
)
def _clamp_trust(value: float) -> float:
return max(_TRUST_MIN, min(_TRUST_MAX, value))
class MemoryStore:
"""SQLite-backed fact store with entity resolution and trust scoring."""
def __init__(
self,
db_path: "str | Path | None" = None,
default_trust: float = 0.5,
hrr_dim: int = 1024,
) -> None:
if db_path is None:
from hermes_constants import get_hermes_home
db_path = str(get_hermes_home() / "memory_store.db")
self.db_path = Path(db_path).expanduser()
self.db_path.parent.mkdir(parents=True, exist_ok=True)
self.default_trust = _clamp_trust(default_trust)
self.hrr_dim = hrr_dim
self._hrr_available = hrr._HAS_NUMPY
self._conn: sqlite3.Connection = sqlite3.connect(
str(self.db_path),
check_same_thread=False,
timeout=10.0,
)
self._lock = threading.RLock()
self._conn.row_factory = sqlite3.Row
self._init_db()
# ------------------------------------------------------------------
# Initialisation
# ------------------------------------------------------------------
def _init_db(self) -> None:
"""Create tables, indexes, and triggers if they do not exist. Enable WAL mode."""
# Use the shared WAL-fallback helper so memory_store.db degrades
# gracefully on NFS/SMB/FUSE-mounted HERMES_HOME (same issue as
# state.db / kanban.db — see hermes_state._WAL_INCOMPAT_MARKERS).
from hermes_state import apply_wal_with_fallback
apply_wal_with_fallback(self._conn, db_label="memory_store.db (holographic)")
self._conn.executescript(_SCHEMA)
# Migrate: add hrr_vector column if missing (safe for existing databases)
columns = {row[1] for row in self._conn.execute("PRAGMA table_info(facts)").fetchall()}
if "hrr_vector" not in columns:
self._conn.execute("ALTER TABLE facts ADD COLUMN hrr_vector BLOB")
self._conn.commit()
# ------------------------------------------------------------------
# Public API
# ------------------------------------------------------------------
def add_fact(
self,
content: str,
category: str = "general",
tags: str = "",
) -> int:
"""Insert a fact and return its fact_id.
Deduplicates by content (UNIQUE constraint). On duplicate, returns
the existing fact_id without modifying the row. Extracts entities from
the content and links them to the fact.
"""
with self._lock:
content = content.strip()
if not content:
raise ValueError("content must not be empty")
try:
cur = self._conn.execute(
"""
INSERT INTO facts (content, category, tags, trust_score)
VALUES (?, ?, ?, ?)
""",
(content, category, tags, self.default_trust),
)
self._conn.commit()
fact_id: int = cur.lastrowid # type: ignore[assignment]
except sqlite3.IntegrityError:
# Duplicate content — return existing id
row = self._conn.execute(
"SELECT fact_id FROM facts WHERE content = ?", (content,)
).fetchone()
return int(row["fact_id"])
# Entity extraction and linking
for name in self._extract_entities(content):
entity_id = self._resolve_entity(name)
self._link_fact_entity(fact_id, entity_id)
# Compute HRR vector after entity linking
self._compute_hrr_vector(fact_id, content)
self._rebuild_bank(category)
return fact_id
def search_facts(
self,
query: str,
category: str | None = None,
min_trust: float = 0.3,
limit: int = 10,
) -> list[dict]:
"""Full-text search over facts using FTS5.
Returns a list of fact dicts ordered by FTS5 rank, then trust_score
descending. Also increments retrieval_count for matched facts.
"""
with self._lock:
query = query.strip()
if not query:
return []
params: list = [query, min_trust]
category_clause = ""
if category is not None:
category_clause = "AND f.category = ?"
params.append(category)
params.append(limit)
sql = f"""
SELECT f.fact_id, f.content, f.category, f.tags,
f.trust_score, f.retrieval_count, f.helpful_count,
f.created_at, f.updated_at
FROM facts f
JOIN facts_fts fts ON fts.rowid = f.fact_id
WHERE facts_fts MATCH ?
AND f.trust_score >= ?
{category_clause}
ORDER BY fts.rank, f.trust_score DESC
LIMIT ?
"""
rows = self._conn.execute(sql, params).fetchall()
results = [self._row_to_dict(r) for r in rows]
if results:
ids = [r["fact_id"] for r in results]
placeholders = ",".join("?" * len(ids))
self._conn.execute(
f"UPDATE facts SET retrieval_count = retrieval_count + 1 WHERE fact_id IN ({placeholders})",
ids,
)
self._conn.commit()
return results
def update_fact(
self,
fact_id: int,
content: str | None = None,
trust_delta: float | None = None,
tags: str | None = None,
category: str | None = None,
) -> bool:
"""Partially update a fact. Trust is clamped to [0, 1].
Returns True if the row existed, False otherwise.
"""
with self._lock:
row = self._conn.execute(
"SELECT fact_id, trust_score FROM facts WHERE fact_id = ?", (fact_id,)
).fetchone()
if row is None:
return False
assignments: list[str] = ["updated_at = CURRENT_TIMESTAMP"]
params: list = []
if content is not None:
assignments.append("content = ?")
params.append(content.strip())
if tags is not None:
assignments.append("tags = ?")
params.append(tags)
if category is not None:
assignments.append("category = ?")
params.append(category)
if trust_delta is not None:
new_trust = _clamp_trust(row["trust_score"] + trust_delta)
assignments.append("trust_score = ?")
params.append(new_trust)
params.append(fact_id)
self._conn.execute(
f"UPDATE facts SET {', '.join(assignments)} WHERE fact_id = ?",
params,
)
self._conn.commit()
# If content changed, re-extract entities
if content is not None:
self._conn.execute(
"DELETE FROM fact_entities WHERE fact_id = ?", (fact_id,)
)
for name in self._extract_entities(content):
entity_id = self._resolve_entity(name)
self._link_fact_entity(fact_id, entity_id)
self._conn.commit()
# Recompute HRR vector if content changed
if content is not None:
self._compute_hrr_vector(fact_id, content)
# Rebuild bank for relevant category
cat = category or self._conn.execute(
"SELECT category FROM facts WHERE fact_id = ?", (fact_id,)
).fetchone()["category"]
self._rebuild_bank(cat)
return True
def remove_fact(self, fact_id: int) -> bool:
"""Delete a fact and its entity links. Returns True if the row existed."""
with self._lock:
row = self._conn.execute(
"SELECT fact_id, category FROM facts WHERE fact_id = ?", (fact_id,)
).fetchone()
if row is None:
return False
self._conn.execute(
"DELETE FROM fact_entities WHERE fact_id = ?", (fact_id,)
)
self._conn.execute("DELETE FROM facts WHERE fact_id = ?", (fact_id,))
self._conn.commit()
self._rebuild_bank(row["category"])
return True
def list_facts(
self,
category: str | None = None,
min_trust: float = 0.0,
limit: int = 50,
) -> list[dict]:
"""Browse facts ordered by trust_score descending.
Optionally filter by category and minimum trust score.
"""
with self._lock:
params: list = [min_trust]
category_clause = ""
if category is not None:
category_clause = "AND category = ?"
params.append(category)
params.append(limit)
sql = f"""
SELECT fact_id, content, category, tags, trust_score,
retrieval_count, helpful_count, created_at, updated_at
FROM facts
WHERE trust_score >= ?
{category_clause}
ORDER BY trust_score DESC
LIMIT ?
"""
rows = self._conn.execute(sql, params).fetchall()
return [self._row_to_dict(r) for r in rows]
def record_feedback(self, fact_id: int, helpful: bool) -> dict:
"""Record user feedback and adjust trust asymmetrically.
helpful=True -> trust += 0.05, helpful_count += 1
helpful=False -> trust -= 0.10
Returns a dict with fact_id, old_trust, new_trust, helpful_count.
Raises KeyError if fact_id does not exist.
"""
with self._lock:
row = self._conn.execute(
"SELECT fact_id, trust_score, helpful_count FROM facts WHERE fact_id = ?",
(fact_id,),
).fetchone()
if row is None:
raise KeyError(f"fact_id {fact_id} not found")
old_trust: float = row["trust_score"]
delta = _HELPFUL_DELTA if helpful else _UNHELPFUL_DELTA
new_trust = _clamp_trust(old_trust + delta)
helpful_increment = 1 if helpful else 0
self._conn.execute(
"""
UPDATE facts
SET trust_score = ?,
helpful_count = helpful_count + ?,
updated_at = CURRENT_TIMESTAMP
WHERE fact_id = ?
""",
(new_trust, helpful_increment, fact_id),
)
self._conn.commit()
return {
"fact_id": fact_id,
"old_trust": old_trust,
"new_trust": new_trust,
"helpful_count": row["helpful_count"] + helpful_increment,
}
# ------------------------------------------------------------------
# Entity helpers
# ------------------------------------------------------------------
def _extract_entities(self, text: str) -> list[str]:
"""Extract entity candidates from text using simple regex rules.
Rules applied (in order):
1. Capitalized multi-word phrases e.g. "John Doe"
2. Double-quoted terms e.g. "Python"
3. Single-quoted terms e.g. 'pytest'
4. AKA patterns e.g. "Guido aka BDFL" -> two entities
Returns a deduplicated list preserving first-seen order.
"""
seen: set[str] = set()
candidates: list[str] = []
def _add(name: str) -> None:
stripped = name.strip()
if stripped and stripped.lower() not in seen:
seen.add(stripped.lower())
candidates.append(stripped)
for m in _RE_CAPITALIZED.finditer(text):
_add(m.group(1))
for m in _RE_DOUBLE_QUOTE.finditer(text):
_add(m.group(1))
for m in _RE_SINGLE_QUOTE.finditer(text):
_add(m.group(1))
for m in _RE_AKA.finditer(text):
_add(m.group(1))
_add(m.group(2))
return candidates
def _resolve_entity(self, name: str) -> int:
"""Find an existing entity by name or alias (case-insensitive) or create one.
Returns the entity_id.
"""
# Exact name match
row = self._conn.execute(
"SELECT entity_id FROM entities WHERE name LIKE ?", (name,)
).fetchone()
if row is not None:
return int(row["entity_id"])
# Search aliases — aliases stored as comma-separated; use LIKE with % boundaries
alias_row = self._conn.execute(
"""
SELECT entity_id FROM entities
WHERE ',' || aliases || ',' LIKE '%,' || ? || ',%'
""",
(name,),
).fetchone()
if alias_row is not None:
return int(alias_row["entity_id"])
# Create new entity
cur = self._conn.execute(
"INSERT INTO entities (name) VALUES (?)", (name,)
)
self._conn.commit()
return int(cur.lastrowid) # type: ignore[return-value]
def _link_fact_entity(self, fact_id: int, entity_id: int) -> None:
"""Insert into fact_entities, silently ignore if the link already exists."""
self._conn.execute(
"""
INSERT OR IGNORE INTO fact_entities (fact_id, entity_id)
VALUES (?, ?)
""",
(fact_id, entity_id),
)
self._conn.commit()
def _compute_hrr_vector(self, fact_id: int, content: str) -> None:
"""Compute and store HRR vector for a fact. No-op if numpy unavailable."""
with self._lock:
if not self._hrr_available:
return
# Get entities linked to this fact
rows = self._conn.execute(
"""
SELECT e.name FROM entities e
JOIN fact_entities fe ON fe.entity_id = e.entity_id
WHERE fe.fact_id = ?
""",
(fact_id,),
).fetchall()
entities = [row["name"] for row in rows]
vector = hrr.encode_fact(content, entities, self.hrr_dim)
self._conn.execute(
"UPDATE facts SET hrr_vector = ? WHERE fact_id = ?",
(hrr.phases_to_bytes(vector), fact_id),
)
self._conn.commit()
def _rebuild_bank(self, category: str) -> None:
"""Full rebuild of a category's memory bank from all its fact vectors."""
with self._lock:
if not self._hrr_available:
return
bank_name = f"cat:{category}"
rows = self._conn.execute(
"SELECT hrr_vector FROM facts WHERE category = ? AND hrr_vector IS NOT NULL",
(category,),
).fetchall()
if not rows:
self._conn.execute("DELETE FROM memory_banks WHERE bank_name = ?", (bank_name,))
self._conn.commit()
return
vectors = [hrr.bytes_to_phases(row["hrr_vector"]) for row in rows]
bank_vector = hrr.bundle(*vectors)
fact_count = len(vectors)
# Check SNR
hrr.snr_estimate(self.hrr_dim, fact_count)
self._conn.execute(
"""
INSERT INTO memory_banks (bank_name, vector, dim, fact_count, updated_at)
VALUES (?, ?, ?, ?, CURRENT_TIMESTAMP)
ON CONFLICT(bank_name) DO UPDATE SET
vector = excluded.vector,
dim = excluded.dim,
fact_count = excluded.fact_count,
updated_at = excluded.updated_at
""",
(bank_name, hrr.phases_to_bytes(bank_vector), self.hrr_dim, fact_count),
)
self._conn.commit()
def rebuild_all_vectors(self, dim: int | None = None) -> int:
"""Recompute all HRR vectors + banks from text. For recovery/migration.
Returns the number of facts processed.
"""
with self._lock:
if not self._hrr_available:
return 0
if dim is not None:
self.hrr_dim = dim
rows = self._conn.execute(
"SELECT fact_id, content, category FROM facts"
).fetchall()
categories: set[str] = set()
for row in rows:
self._compute_hrr_vector(row["fact_id"], row["content"])
categories.add(row["category"])
for category in categories:
self._rebuild_bank(category)
return len(rows)
# ------------------------------------------------------------------
# Utilities
# ------------------------------------------------------------------
def _row_to_dict(self, row: sqlite3.Row) -> dict:
"""Convert a sqlite3.Row to a plain dict."""
return dict(row)
def close(self) -> None:
"""Close the database connection."""
self._conn.close()
def __enter__(self) -> "MemoryStore":
return self
def __exit__(self, *_: object) -> None:
self.close()
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@@ -0,0 +1,368 @@
# Honcho Memory Provider
AI-native cross-session user modeling with multi-pass dialectic reasoning, session summaries, bidirectional peer tools, and persistent conclusions.
> **Honcho docs:** <https://docs.honcho.dev/v3/guides/integrations/hermes>
## Requirements
- `pip install honcho-ai`
- Honcho API key from [app.honcho.dev](https://app.honcho.dev), or a self-hosted instance
## Setup
```bash
hermes memory setup honcho # configure Honcho directly (works on a fresh install)
hermes memory setup # generic picker, choose Honcho from the list
```
Or manually:
```bash
hermes config set memory.provider honcho
echo "HONCHO_API_KEY=***" >> ~/.hermes/.env
```
> `hermes honcho setup` also works, but only **after** Honcho is the active
> memory provider — the `honcho` subcommand is registered for the active
> provider only. On a fresh install, use `hermes memory setup honcho`.
## Architecture Overview
### Two-Layer Context Injection
Context is injected into the **user message** at API-call time (not the system prompt) to preserve prompt caching. Only a static mode header goes in the system prompt. The injected block is wrapped in `<memory-context>` fences with a system note clarifying it's background data, not new user input.
Two independent layers, each on its own cadence:
**Layer 1 — Base context** (refreshed every `contextCadence` turns):
1. **SESSION SUMMARY** — from `session.context(summary=True)`, placed first
2. **User Representation** — Honcho's evolving model of the user
3. **User Peer Card** — key facts snapshot
4. **AI Self-Representation** — Honcho's model of the AI peer
5. **AI Identity Card** — AI peer facts
**Layer 2 — Dialectic supplement** (fired every `dialecticCadence` turns):
Multi-pass `.chat()` reasoning about the user, appended after base context.
Both layers are joined, then truncated to fit `contextTokens` budget via `_truncate_to_budget` (tokens × 4 chars, word-boundary safe).
### Cold Start vs Warm Session Prompts
Dialectic pass 0 automatically selects its prompt based on session state:
- **Cold** (no base context cached): "Who is this person? What are their preferences, goals, and working style? Focus on facts that would help an AI assistant be immediately useful."
- **Warm** (base context exists): "Given what's been discussed in this session so far, what context about this user is most relevant to the current conversation? Prioritize active context over biographical facts."
Not configurable — determined automatically.
### Dialectic Depth (Multi-Pass Reasoning)
`dialecticDepth` (13, clamped) controls how many `.chat()` calls fire per dialectic cycle:
| Depth | Passes | Behavior |
|-------|--------|----------|
| 1 | single `.chat()` | Base query only (cold or warm prompt) |
| 2 | audit + synthesis | Pass 0 result is self-audited; pass 1 does targeted synthesis. Conditional bail-out if pass 0 returns strong signal (>300 chars or structured with bullets/sections >100 chars) |
| 3 | audit + synthesis + reconciliation | Pass 2 reconciles contradictions across prior passes into a final synthesis |
### Proportional Reasoning Levels
When `dialecticDepthLevels` is not set, each pass uses a proportional level relative to `dialecticReasoningLevel` (the "base"):
| Depth | Pass levels |
|-------|-------------|
| 1 | [base] |
| 2 | [minimal, base] |
| 3 | [minimal, base, low] |
Override with `dialecticDepthLevels`: an explicit array of reasoning level strings per pass.
### Three Orthogonal Dialectic Knobs
| Knob | Controls | Type |
|------|----------|------|
| `dialecticCadence` | How often — minimum turns between dialectic firings | int |
| `dialecticDepth` | How many — passes per firing (13) | int |
| `dialecticReasoningLevel` | How hard — reasoning ceiling per `.chat()` call | string |
### Input Sanitization
`run_conversation` strips leaked `<memory-context>` blocks from user input before processing. When `saveMessages` persists a turn that included injected context, the block can reappear in subsequent turns via message history. The sanitizer removes `<memory-context>` blocks plus associated system notes.
## Tools
Five bidirectional tools. All accept an optional `peer` parameter (`"user"` or `"ai"`, default `"user"`).
| Tool | LLM call? | Description |
|------|-----------|-------------|
| `honcho_profile` | No | Peer card — key facts snapshot |
| `honcho_search` | No | Semantic search over stored context (800 tok default, 2000 max) |
| `honcho_context` | No | Full session context: summary, representation, card, messages |
| `honcho_reasoning` | Yes | LLM-synthesized answer via dialectic `.chat()` |
| `honcho_conclude` | No | Write a persistent fact/conclusion about the user |
Tool visibility depends on `recallMode`: hidden in `context` mode, always present in `tools` and `hybrid`.
## Config Resolution
Config is read from the first file that exists:
| Priority | Path | Scope |
|----------|------|-------|
| 1 | `$HERMES_HOME/honcho.json` | Profile-local (isolated Hermes instances) |
| 2 | `~/.hermes/honcho.json` | Default profile (shared host blocks) |
| 3 | `~/.honcho/config.json` | Global (cross-app interop) |
Host key is derived from the active Hermes profile: `hermes` (default) or `hermes_<profile>`.
For every key, resolution order is: **host block > root > env var > default**.
## Full Configuration Reference
### Identity & Connection
| Key | Type | Default | Description |
|-----|------|---------|-------------|
| `apiKey` | string | — | API key. Falls back to `HONCHO_API_KEY` env var |
| `baseUrl` | string | — | Base URL for self-hosted Honcho. Local URLs auto-skip API key auth |
| `environment` | string | `"production"` | SDK environment mapping |
| `enabled` | bool | auto | Master toggle. Auto-enables when `apiKey` or `baseUrl` present |
| `workspace` | string | host key | Honcho workspace ID. Shared environment — all profiles in the same workspace can see the same user identity and related memories |
| `peerName` | string | — | User peer identity |
| `aiPeer` | string | host key | AI peer identity |
### Identity Mapping (Gateway Multi-User)
In gateway deployments (Telegram, Discord, Slack, etc.) each user arrives with a platform-native runtime ID (Telegram UID, Discord snowflake, Slack user). These three keys control how those runtime IDs map to Honcho peers. The resolver is config-driven and deterministic — no automatic merging or runtime inference.
| Key | Type | Default | Description |
|-----|------|---------|-------------|
| `pinUserPeer` | bool | `false` | When `true`, every gateway runtime user collapses to `peerName`. Single-operator deployments where you want all your platforms (and any other users) to share one peer. Also accepted as `pinPeerName` |
| `pinPeerName` | bool | `false` | Alias for `pinUserPeer`; same effect |
| `userPeerAliases` | object | `{}` | Map of runtime IDs to peer IDs (`{"86701400": "eri"}`). Many-to-one is the intended pattern — alias all your runtime IDs to one peer name. One-to-many is not supported; one runtime ID resolves to exactly one peer |
| `runtimePeerPrefix` | string | `""` | Prepended to unknown runtime IDs to namespace them (e.g. `"telegram_"``telegram_86701400`). Used only when no alias matches. Prevents collisions between platforms whose runtime IDs share the same shape |
**Resolver ladder** (first match wins):
```
1. pinUserPeer / pinPeerName=true → return peerName (ignore runtime ID)
2. userPeerAliases[runtime_id] → return aliased peer
3. userPeerAliases[runtime_id_alt] → check alt-ID too (Telegram UID + username, etc.)
4. runtimePeerPrefix + runtime_id → namespaced peer, with sha256 collision escalation
5. raw sanitized runtime_id → fallback peer
6. peerName → no runtime ID at all (CLI/TUI)
7. session-key fallback → no config either
```
**Why no `pinAiPeer`?** The AI peer is already pinned by construction — `aiPeer` is the only AI-side identity setting and the resolver never overrides it. Only the user-side peer has the runtime-vs-config tension that `pinUserPeer` resolves.
**Host vs root semantics.** All three keys are accepted at both root and `hosts.<host>` levels. Host-level wins. For maps and prefixes, host-level *replaces* the root value as a whole (not merge), so a host can intentionally own its identity universe or wipe it with `userPeerAliases: {}` / `runtimePeerPrefix: ""`.
**Deployment shapes** (`hermes memory setup honcho` asks one prompt to set these):
- **Single-operator** — `pinUserPeer: true`. All gateway users → `peerName`. Recommended for personal use where you connect Hermes to your own Telegram/Discord/etc.
- **Multi-user gateway** — `pinUserPeer: false`, optional `runtimePeerPrefix`. Each runtime user → own peer. Recommended for bots serving many humans.
- **Hybrid** — `pinUserPeer: false`, `userPeerAliases` mapping the operator's runtime IDs to `peerName`. Multi-user gateway where YOU are routed but others stay distinct.
**Migrating single → multi.** Flipping `pinUserPeer` from `true` to `false` does not migrate data. Memory accumulated under `peerName` while pinned stays there; runtime users now resolve to fresh, empty peers. To preserve your own continuity, use the **hybrid** shape — alias your runtime IDs back to `peerName` so your turns keep landing on the pooled history while other users get their own peers. The setup wizard offers this path automatically when it detects a single → multi transition.
### Memory & Recall
| Key | Type | Default | Description |
|-----|------|---------|-------------|
| `recallMode` | string | `"hybrid"` | `"hybrid"` (auto-inject + tools), `"context"` (auto-inject only, tools hidden), `"tools"` (tools only, no injection). Legacy `"auto"``"hybrid"` |
| `observationMode` | string | `"directional"` | Preset: `"directional"` (all on) or `"unified"` (shared pool). Use `observation` object for granular control |
| `observation` | object | — | Per-peer observation config (see Observation section) |
### Write Behavior
| Key | Type | Default | Description |
|-----|------|---------|-------------|
| `writeFrequency` | string/int | `"async"` | `"async"` (background), `"turn"` (sync per turn), `"session"` (batch on end), or integer N (every N turns) |
| `saveMessages` | bool | `true` | Persist messages to Honcho API |
### Session Resolution
| Key | Type | Default | Description |
|-----|------|---------|-------------|
| `sessionStrategy` | string | `"per-directory"` | `"per-directory"`, `"per-session"`, `"per-repo"` (git root), `"global"` |
| `sessionPeerPrefix` | bool | `false` | Prepend peer name to session keys |
| `sessions` | object | `{}` | Manual directory-to-session-name mappings |
#### Session Name Resolution
The Honcho session name determines which conversation bucket memory lands in. Resolution follows a priority chain — first match wins:
| Priority | Source | Example session name |
|----------|--------|---------------------|
| 1 | Manual map (`sessions` config) | `"myproject-main"` |
| 2 | `/title` command (mid-session rename) | `"refactor-auth"` |
| 3 | Gateway session key (Telegram, Discord, etc.) | `"agent-main-telegram-dm-8439114563"` |
| 4 | `per-session` strategy | Hermes session ID (`20260415_a3f2b1`) |
| 5 | `per-repo` strategy | Git root directory name (`hermes-agent`) |
| 6 | `per-directory` strategy | Current directory basename (`src`) |
| 7 | `global` strategy | Workspace name (`hermes`) |
Gateway platforms always resolve via priority 3 (per-chat isolation) regardless of `sessionStrategy`. The strategy setting only affects CLI sessions.
If `sessionPeerPrefix` is `true`, the peer name is prepended: `eri-hermes-agent`.
#### What each strategy produces
- **`per-directory`** — basename of `$PWD`. Opening hermes in `~/code/myapp` and `~/code/other` gives two separate sessions. Same directory = same session across runs.
- **`per-repo`** — git root directory name. All subdirectories within a repo share one session. Falls back to `per-directory` if not inside a git repo.
- **`per-session`** — Hermes session ID (timestamp + hex). Every `hermes` invocation starts a fresh Honcho session. Falls back to `per-directory` if no session ID is available.
- **`global`** — workspace name. One session for everything. Memory accumulates across all directories and runs.
### Multi-Profile Pattern
Multiple Hermes profiles can share one workspace while maintaining separate AI identities. Config resolution is **host block > root > env var > default** — host blocks inherit from root, so shared settings only need to be declared once:
```json
{
"apiKey": "***",
"workspace": "hermes",
"peerName": "yourname",
"hosts": {
"hermes": {
"aiPeer": "hermes",
"recallMode": "hybrid",
"sessionStrategy": "per-directory"
},
"hermes_coder": {
"aiPeer": "coder",
"recallMode": "tools",
"sessionStrategy": "per-repo"
}
}
}
```
Both profiles see the same user (`yourname`) in the same shared environment (`hermes`), but each AI peer builds its own observations, conclusions, and behavior patterns. The coder's memory stays code-oriented; the main agent's stays broad.
Host key is derived from the active Hermes profile: `hermes` (default) or `hermes_<profile>` (e.g. `hermes -p coder` -> host key `hermes_coder`). Older `hermes.<profile>` host blocks are still read for compatibility and are migrated when the CLI writes profile-scoped Honcho config.
### Dialectic & Reasoning
| Key | Type | Default | Description |
|-----|------|---------|-------------|
| `dialecticDepth` | int | `1` | Passes per dialectic cycle (13, clamped). 1=single query, 2=audit+synthesis, 3=audit+synthesis+reconciliation |
| `dialecticDepthLevels` | array | — | Optional array of reasoning level strings per pass. Overrides proportional defaults. Example: `["minimal", "low", "medium"]` |
| `dialecticReasoningLevel` | string | `"low"` | Base reasoning level for `.chat()`: `"minimal"`, `"low"`, `"medium"`, `"high"`, `"max"` |
| `dialecticDynamic` | bool | `true` | When `true`, model can override reasoning level per-call via `honcho_reasoning` tool. When `false`, always uses `dialecticReasoningLevel` |
| `dialecticMaxChars` | int | `600` | Max chars of dialectic result injected into system prompt |
| `dialecticMaxInputChars` | int | `10000` | Max chars for dialectic query input to `.chat()`. Honcho cloud limit: 10k |
### Token Budgets
| Key | Type | Default | Description |
|-----|------|---------|-------------|
| `contextTokens` | int | SDK default | Token budget for `context()` API calls. Also gates prefetch truncation (tokens × 4 chars) |
| `messageMaxChars` | int | `25000` | Max chars per message sent via `add_messages()`. Exceeding this triggers chunking with `[continued]` markers. Honcho cloud limit: 25k |
### Cadence (Cost Control)
| Key | Type | Default | Description |
|-----|------|---------|-------------|
| `contextCadence` | int | `1` | Minimum turns between base context refreshes (session summary + representation + card) |
| `dialecticCadence` | int | `1` | Minimum turns between dialectic `.chat()` firings |
| `injectionFrequency` | string | `"every-turn"` | `"every-turn"` or `"first-turn"` (inject context on the first user message only, skip from turn 2 onward) |
| `reasoningLevelCap` | string | — | Hard cap on reasoning level: `"minimal"`, `"low"`, `"medium"`, `"high"` |
### Observation (Granular)
Maps 1:1 to Honcho's per-peer `SessionPeerConfig`. When present, overrides `observationMode` preset.
```json
"observation": {
"user": { "observeMe": true, "observeOthers": true },
"ai": { "observeMe": true, "observeOthers": true }
}
```
| Field | Default | Description |
|-------|---------|-------------|
| `user.observeMe` | `true` | User peer self-observation (Honcho builds user representation) |
| `user.observeOthers` | `true` | User peer observes AI messages |
| `ai.observeMe` | `true` | AI peer self-observation (Honcho builds AI representation) |
| `ai.observeOthers` | `true` | AI peer observes user messages (enables cross-peer dialectic) |
Presets:
- `"directional"` (default): all four `true`
- `"unified"`: user `observeMe=true`, AI `observeOthers=true`, rest `false`
### Hardcoded Limits
| Limit | Value |
|-------|-------|
| Search tool max tokens | 2000 (hard cap), 800 (default) |
| Peer card fetch tokens | 200 |
## Environment Variables
| Variable | Fallback for |
|----------|-------------|
| `HONCHO_API_KEY` | `apiKey` |
| `HONCHO_BASE_URL` | `baseUrl` |
| `HONCHO_ENVIRONMENT` | `environment` |
| `HERMES_HONCHO_HOST` | Host key override |
## CLI Commands
| Command | Description |
|---------|-------------|
| `hermes memory setup honcho` | Configure Honcho directly — works on a fresh install |
| `hermes honcho setup` | Interactive setup wizard (only registered once Honcho is the active provider; redirects to `hermes memory setup`) |
| `hermes honcho status` | Show resolved config for active profile |
| `hermes honcho enable` / `disable` | Toggle Honcho for active profile |
| `hermes honcho mode <mode>` | Change recall or observation mode |
| `hermes honcho peer --user <name>` | Update user peer name |
| `hermes honcho peer --ai <name>` | Update AI peer name |
| `hermes honcho tokens --context <N>` | Set context token budget |
| `hermes honcho tokens --dialectic <N>` | Set dialectic max chars |
| `hermes honcho map <name>` | Map current directory to a session name |
| `hermes honcho sync` | Create host blocks for all Hermes profiles |
## Example Config
```json
{
"apiKey": "***",
"workspace": "hermes",
"peerName": "username",
"contextCadence": 2,
"dialecticCadence": 3,
"dialecticDepth": 2,
"hosts": {
"hermes": {
"enabled": true,
"aiPeer": "hermes",
"recallMode": "hybrid",
"observation": {
"user": { "observeMe": true, "observeOthers": true },
"ai": { "observeMe": true, "observeOthers": true }
},
"writeFrequency": "async",
"sessionStrategy": "per-directory",
"dialecticReasoningLevel": "low",
"dialecticDepth": 2,
"dialecticMaxChars": 600,
"saveMessages": true
},
"hermes_coder": {
"enabled": true,
"aiPeer": "coder",
"sessionStrategy": "per-repo",
"dialecticDepth": 1,
"dialecticDepthLevels": ["low"],
"observation": {
"user": { "observeMe": true, "observeOthers": false },
"ai": { "observeMe": true, "observeOthers": true }
}
}
},
"sessions": {
"/home/user/myproject": "myproject-main"
}
}
```
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"""Honcho client initialization and configuration.
Resolution order for config file:
1. $HERMES_HOME/honcho.json (instance-local, enables isolated Hermes instances)
2. ~/.honcho/config.json (global, shared across all Honcho-enabled apps)
3. Environment variables (HONCHO_API_KEY, HONCHO_ENVIRONMENT)
Resolution order for host-specific settings:
1. Explicit host block fields (always win)
2. Flat/global fields from config root
3. Defaults (host name as workspace/peer)
"""
from __future__ import annotations
import json
import os
import logging
import hashlib
from dataclasses import dataclass, field
from pathlib import Path
from hermes_constants import get_hermes_home
from hermes_cli.profiles import _get_default_hermes_home
from plugins.plugin_utils import SingletonSlot
from typing import Any, TYPE_CHECKING
if TYPE_CHECKING:
from honcho import Honcho
logger = logging.getLogger(__name__)
HOST = "hermes"
def profile_host_key(profile: str | None) -> str:
"""Return the safe Honcho host key for a Hermes profile."""
if not profile or profile in {"default", "custom"}:
return HOST
sanitized = "".join(c if c.isalnum() or c in "_-" else "_" for c in profile).strip("_")
return f"{HOST}_{sanitized or 'profile'}"
def _host_block(raw: dict, host: str) -> dict:
"""Return host config, accepting legacy dot-form profile host keys."""
hosts = raw.get("hosts") or {}
block = hosts.get(host, {})
if block or not host.startswith(f"{HOST}_"):
return block
legacy = f"{HOST}.{host[len(HOST) + 1:]}"
return hosts.get(legacy, {})
def resolve_active_host() -> str:
"""Derive the Honcho host key from the active Hermes profile.
Resolution order:
1. HERMES_HONCHO_HOST env var (explicit override)
2. Active profile name via profiles system -> ``hermes.<profile>``
3. Fallback: ``"hermes"`` (default profile)
"""
explicit = os.environ.get("HERMES_HONCHO_HOST", "").strip()
if explicit:
return explicit
try:
from hermes_cli.profiles import get_active_profile_name
profile = get_active_profile_name()
return profile_host_key(profile)
except Exception:
pass
return HOST
def resolve_global_config_path() -> Path:
"""Return the shared Honcho config path for the current HOME."""
return Path.home() / ".honcho" / "config.json"
def resolve_config_path() -> Path:
"""Return the active Honcho config path.
Resolution order:
1. $HERMES_HOME/honcho.json (profile-local, if it exists)
2. ~/.hermes/honcho.json (default profile shared host blocks live here)
3. ~/.honcho/config.json (global, cross-app interop)
Returns the global path if none exist (for first-time setup writes).
"""
local_path = get_hermes_home() / "honcho.json"
if local_path.exists():
return local_path
# Default profile's config — host blocks accumulate here via setup/clone
default_path = _get_default_hermes_home() / "honcho.json"
if default_path != local_path and default_path.exists():
return default_path
return resolve_global_config_path()
_RECALL_MODE_ALIASES = {"auto": "hybrid"}
_VALID_RECALL_MODES = {"hybrid", "context", "tools"}
def _normalize_recall_mode(val: str) -> str:
"""Normalize legacy recall mode values (e.g. 'auto''hybrid')."""
val = _RECALL_MODE_ALIASES.get(val, val)
return val if val in _VALID_RECALL_MODES else "hybrid"
def _resolve_bool(*vals, default: bool) -> bool:
"""Resolve a bool config field: first non-None wins, else default.
Variadic to support aliased keys (e.g. ``pinUserPeer`` shadowing
``pinPeerName`` for backwards compatibility). Pass values in
precedence order: caller's preferred alias first, then fallback
aliases, in (host, root) interleaving as needed.
"""
for val in vals:
if val is not None:
return bool(val)
return default
def _parse_context_tokens(host_val, root_val) -> int | None:
"""Parse contextTokens: host wins, then root, then None (uncapped)."""
for val in (host_val, root_val):
if val is not None:
try:
return int(val)
except (ValueError, TypeError):
pass
return None
def _parse_int_config(host_val, root_val, default: int) -> int:
"""Parse an integer config: host wins, then root, then default."""
for val in (host_val, root_val):
if val is not None:
try:
return int(val)
except (ValueError, TypeError):
pass
return default
def _parse_string_map(host_obj: dict, root_obj: dict, key: str) -> dict[str, str]:
"""Parse a string-to-string map with host-level whole-map override."""
source = host_obj[key] if key in host_obj else root_obj.get(key)
if not isinstance(source, dict):
return {}
result: dict[str, str] = {}
for raw_key, raw_value in source.items():
alias_key = str(raw_key).strip()
alias_value = str(raw_value).strip() if raw_value is not None else ""
if alias_key and alias_value:
result[alias_key] = alias_value
return result
def _parse_optional_string(
host_obj: dict, root_obj: dict, key: str, default: str = ""
) -> str:
"""Parse a string field where host-level empty string can override root."""
if key in host_obj:
value = host_obj.get(key)
else:
value = root_obj.get(key, default)
if value is None:
return default
return str(value).strip()
def _parse_dialectic_depth(host_val, root_val) -> int:
"""Parse dialecticDepth: host wins, then root, then 1. Clamped to 1-3."""
for val in (host_val, root_val):
if val is not None:
try:
return max(1, min(int(val), 3))
except (ValueError, TypeError):
pass
return 1
_VALID_REASONING_LEVELS = ("minimal", "low", "medium", "high", "max")
def _parse_dialectic_depth_levels(host_val, root_val, depth: int) -> list[str] | None:
"""Parse dialecticDepthLevels: optional array of reasoning levels per pass.
Returns None when not configured (use proportional defaults).
When configured, validates each level and truncates/pads to match depth.
"""
for val in (host_val, root_val):
if val is not None and isinstance(val, list):
levels = [
lvl if lvl in _VALID_REASONING_LEVELS else "low"
for lvl in val[:depth]
]
# Pad with "low" if array is shorter than depth
while len(levels) < depth:
levels.append("low")
return levels
return None
# Default HTTP timeout (seconds) applied when no explicit timeout is
# configured via HonchoClientConfig.timeout, honcho.timeout / requestTimeout,
# or HONCHO_TIMEOUT. Honcho calls happen on the post-response path of
# run_conversation; without a cap the agent can block indefinitely when
# the Honcho backend is unreachable, preventing the gateway from
# delivering the already-generated response.
_DEFAULT_HTTP_TIMEOUT = 30.0
def _resolve_optional_float(*values: Any) -> float | None:
"""Return the first non-empty value coerced to a positive float."""
for value in values:
if value is None:
continue
if isinstance(value, str):
value = value.strip()
if not value:
continue
try:
parsed = float(value)
except (TypeError, ValueError):
continue
if parsed > 0:
return parsed
return None
_VALID_OBSERVATION_MODES = {"unified", "directional"}
_OBSERVATION_MODE_ALIASES = {"shared": "unified", "separate": "directional", "cross": "directional"}
def _normalize_observation_mode(val: str) -> str:
"""Normalize observation mode values."""
val = _OBSERVATION_MODE_ALIASES.get(val, val)
return val if val in _VALID_OBSERVATION_MODES else "directional"
# Observation presets — granular booleans derived from legacy string mode.
# Explicit per-peer config always wins over presets.
_OBSERVATION_PRESETS = {
"directional": {
"user_observe_me": True, "user_observe_others": True,
"ai_observe_me": True, "ai_observe_others": True,
},
"unified": {
"user_observe_me": True, "user_observe_others": False,
"ai_observe_me": False, "ai_observe_others": True,
},
}
def _resolve_observation(
mode: str,
observation_obj: dict | None,
) -> dict:
"""Resolve per-peer observation booleans.
Config forms:
String shorthand: ``"observationMode": "directional"``
Granular object: ``"observation": {"user": {"observeMe": true, "observeOthers": true},
"ai": {"observeMe": true, "observeOthers": false}}``
Granular fields override preset defaults.
"""
preset = _OBSERVATION_PRESETS.get(mode, _OBSERVATION_PRESETS["directional"])
if not observation_obj or not isinstance(observation_obj, dict):
return dict(preset)
user_block = observation_obj.get("user") or {}
ai_block = observation_obj.get("ai") or {}
return {
"user_observe_me": user_block.get("observeMe", preset["user_observe_me"]),
"user_observe_others": user_block.get("observeOthers", preset["user_observe_others"]),
"ai_observe_me": ai_block.get("observeMe", preset["ai_observe_me"]),
"ai_observe_others": ai_block.get("observeOthers", preset["ai_observe_others"]),
}
@dataclass
class HonchoClientConfig:
"""Configuration for Honcho client, resolved for a specific host."""
host: str = HOST
workspace_id: str = "hermes"
api_key: str | None = None
environment: str = "production"
# Optional base URL for self-hosted Honcho (overrides environment mapping)
base_url: str | None = None
# Optional request timeout in seconds for Honcho SDK HTTP calls
timeout: float | None = None
# Identity
peer_name: str | None = None
ai_peer: str = "hermes"
# When True, ``peer_name`` wins over any gateway-supplied runtime
# identity (Telegram UID, Discord ID, …) when resolving the user peer.
# This keeps memory unified across platforms for single-user deployments
# where Honcho's one peer-name is an unambiguous identity — otherwise
# each platform would fork memory into its own peer (#14984). Default
# ``False`` preserves existing multi-user behaviour.
pin_peer_name: bool = False
# Map gateway runtime user IDs to stable Honcho user peers. Host-level
# config replaces the root map as a whole so profiles can intentionally
# own their identity mappings.
user_peer_aliases: dict[str, str] = field(default_factory=dict)
# Optional prefix for unknown gateway runtime user IDs, e.g. "telegram_".
runtime_peer_prefix: str = ""
# Toggles
enabled: bool = False
save_messages: bool = True
# Write frequency: "async" (background thread), "turn" (sync per turn),
# "session" (flush on session end), or int (every N turns)
write_frequency: str | int = "async"
# Prefetch budget (None = no cap; set to an integer to bound auto-injected context)
context_tokens: int | None = None
# Dialectic (peer.chat) settings
# reasoning_level: "minimal" | "low" | "medium" | "high" | "max"
dialectic_reasoning_level: str = "low"
# When true, the model can override reasoning_level per-call via the
# honcho_reasoning tool param (agentic). When false, always uses
# dialecticReasoningLevel and ignores model-provided overrides.
dialectic_dynamic: bool = True
# Max chars of dialectic result to inject into Hermes system prompt
dialectic_max_chars: int = 600
# Dialectic depth: how many .chat() calls per dialectic cycle (1-3).
# Depth 1: single call. Depth 2: self-audit + targeted synthesis.
# Depth 3: self-audit + synthesis + reconciliation.
dialectic_depth: int = 1
# Optional per-pass reasoning level override. Array of reasoning levels
# matching dialectic_depth length. When None, uses proportional defaults
# derived from dialectic_reasoning_level.
dialectic_depth_levels: list[str] | None = None
# When true, the auto-injected dialectic scales reasoning level up on
# longer queries. See HonchoMemoryProvider for thresholds.
reasoning_heuristic: bool = True
# Ceiling for the heuristic-selected reasoning level.
reasoning_level_cap: str = "high"
# Honcho API limits — configurable for self-hosted instances
# Max chars per message sent via add_messages() (Honcho cloud: 25000)
message_max_chars: int = 25000
# Max chars for dialectic query input to peer.chat() (Honcho cloud: 10000)
dialectic_max_input_chars: int = 10000
# Recall mode: how memory retrieval works when Honcho is active.
# "hybrid" — auto-injected context + Honcho tools available (model decides)
# "context" — auto-injected context only, Honcho tools removed
# "tools" — Honcho tools only, no auto-injected context
recall_mode: str = "hybrid"
# Eager init in tools mode — when true, initializes session during
# initialize() instead of deferring to first tool call
init_on_session_start: bool = False
# Observation mode: legacy string shorthand ("directional" or "unified").
# Kept for backward compat; granular per-peer booleans below are preferred.
observation_mode: str = "directional"
# Per-peer observation booleans — maps 1:1 to Honcho's SessionPeerConfig.
# Resolved from "observation" object in config, falling back to observation_mode preset.
user_observe_me: bool = True
user_observe_others: bool = True
ai_observe_me: bool = True
ai_observe_others: bool = True
# Session resolution
session_strategy: str = "per-directory"
session_peer_prefix: bool = False
sessions: dict[str, str] = field(default_factory=dict)
# Raw global config for anything else consumers need
raw: dict[str, Any] = field(default_factory=dict)
# True when Honcho was explicitly configured for this host (hosts.hermes
# block exists or enabled was set explicitly), vs auto-enabled from a
# stray HONCHO_API_KEY env var.
explicitly_configured: bool = False
@classmethod
def from_env(
cls,
workspace_id: str = "hermes",
host: str | None = None,
) -> HonchoClientConfig:
"""Create config from environment variables (fallback)."""
resolved_host = host or resolve_active_host()
api_key = os.environ.get("HONCHO_API_KEY")
base_url = os.environ.get("HONCHO_BASE_URL", "").strip() or None
timeout = _resolve_optional_float(os.environ.get("HONCHO_TIMEOUT"))
return cls(
host=resolved_host,
workspace_id=workspace_id,
api_key=api_key,
environment=os.environ.get("HONCHO_ENVIRONMENT", "production"),
base_url=base_url,
timeout=timeout,
ai_peer=resolved_host,
enabled=bool(api_key or base_url),
)
@classmethod
def from_global_config(
cls,
host: str | None = None,
config_path: Path | None = None,
) -> HonchoClientConfig:
"""Create config from the resolved Honcho config path.
Resolution: $HERMES_HOME/honcho.json -> ~/.honcho/config.json -> env vars.
When host is None, derives it from the active Hermes profile.
"""
resolved_host = host or resolve_active_host()
path = config_path or resolve_config_path()
if not path.exists():
logger.debug("No global Honcho config at %s, falling back to env", path)
return cls.from_env(host=resolved_host)
try:
raw = json.loads(path.read_text(encoding="utf-8"))
except (json.JSONDecodeError, OSError) as e:
logger.warning("Failed to read %s: %s, falling back to env", path, e)
return cls.from_env(host=resolved_host)
host_block = _host_block(raw, resolved_host)
# A hosts.hermes block or explicit enabled flag means the user
# intentionally configured Honcho for this host.
_explicitly_configured = bool(host_block) or raw.get("enabled") is True
# Explicit host block fields win, then flat/global, then defaults
workspace = (
host_block.get("workspace")
or raw.get("workspace")
or resolved_host
)
ai_peer = (
host_block.get("aiPeer")
or raw.get("aiPeer")
or resolved_host
)
api_key = (
host_block.get("apiKey")
or raw.get("apiKey")
or os.environ.get("HONCHO_API_KEY")
)
environment = (
host_block.get("environment")
or raw.get("environment", "production")
)
base_url = (
raw.get("baseUrl")
or raw.get("base_url")
or os.environ.get("HONCHO_BASE_URL", "").strip()
or None
)
timeout = _resolve_optional_float(
raw.get("timeout"),
raw.get("requestTimeout"),
os.environ.get("HONCHO_TIMEOUT"),
)
# Auto-enable when API key or base_url is present (unless explicitly disabled)
# Host-level enabled wins, then root-level, then auto-enable if key/url exists.
host_enabled = host_block.get("enabled")
root_enabled = raw.get("enabled")
if host_enabled is not None:
enabled = host_enabled
elif root_enabled is not None:
enabled = root_enabled
else:
# Not explicitly set anywhere -> auto-enable if API key or base_url exists
enabled = bool(api_key or base_url)
# write_frequency: accept int or string
raw_wf = (
host_block.get("writeFrequency")
or raw.get("writeFrequency")
or "async"
)
try:
write_frequency: str | int = int(raw_wf)
except (TypeError, ValueError):
write_frequency = str(raw_wf)
# saveMessages: host wins (None-aware since False is valid)
host_save = host_block.get("saveMessages")
save_messages = host_save if host_save is not None else raw.get("saveMessages", True)
# sessionStrategy / sessionPeerPrefix: host first, root fallback
session_strategy = (
host_block.get("sessionStrategy")
or raw.get("sessionStrategy", "per-directory")
)
host_prefix = host_block.get("sessionPeerPrefix")
session_peer_prefix = (
host_prefix if host_prefix is not None
else raw.get("sessionPeerPrefix", False)
)
return cls(
host=resolved_host,
workspace_id=workspace,
api_key=api_key,
environment=environment,
base_url=base_url,
timeout=timeout,
peer_name=host_block.get("peerName") or raw.get("peerName"),
ai_peer=ai_peer,
pin_peer_name=_resolve_bool(
# ``pinUserPeer`` is the clearer name (the resolver pins
# the user-side peer to ``peerName``, ignoring runtime
# identity). ``pinPeerName`` is the original key from
# #14984 and stays accepted for backward compatibility.
# Host-level keys win over root-level; among same-level
# keys, ``pinUserPeer`` wins over ``pinPeerName``.
host_block.get("pinUserPeer"),
host_block.get("pinPeerName"),
raw.get("pinUserPeer"),
raw.get("pinPeerName"),
default=False,
),
user_peer_aliases=_parse_string_map(
host_block,
raw,
"userPeerAliases",
),
runtime_peer_prefix=_parse_optional_string(
host_block,
raw,
"runtimePeerPrefix",
),
enabled=enabled,
save_messages=save_messages,
write_frequency=write_frequency,
context_tokens=_parse_context_tokens(
host_block.get("contextTokens"),
raw.get("contextTokens"),
),
dialectic_reasoning_level=(
host_block.get("dialecticReasoningLevel")
or raw.get("dialecticReasoningLevel")
or "low"
),
dialectic_dynamic=_resolve_bool(
host_block.get("dialecticDynamic"),
raw.get("dialecticDynamic"),
default=True,
),
dialectic_max_chars=_parse_int_config(
host_block.get("dialecticMaxChars"),
raw.get("dialecticMaxChars"),
default=600,
),
dialectic_depth=_parse_dialectic_depth(
host_block.get("dialecticDepth"),
raw.get("dialecticDepth"),
),
dialectic_depth_levels=_parse_dialectic_depth_levels(
host_block.get("dialecticDepthLevels"),
raw.get("dialecticDepthLevels"),
depth=_parse_dialectic_depth(host_block.get("dialecticDepth"), raw.get("dialecticDepth")),
),
reasoning_heuristic=_resolve_bool(
host_block.get("reasoningHeuristic"),
raw.get("reasoningHeuristic"),
default=True,
),
reasoning_level_cap=(
host_block.get("reasoningLevelCap")
or raw.get("reasoningLevelCap")
or "high"
),
message_max_chars=_parse_int_config(
host_block.get("messageMaxChars"),
raw.get("messageMaxChars"),
default=25000,
),
dialectic_max_input_chars=_parse_int_config(
host_block.get("dialecticMaxInputChars"),
raw.get("dialecticMaxInputChars"),
default=10000,
),
recall_mode=_normalize_recall_mode(
host_block.get("recallMode")
or raw.get("recallMode")
or "hybrid"
),
init_on_session_start=_resolve_bool(
host_block.get("initOnSessionStart"),
raw.get("initOnSessionStart"),
default=False,
),
# Migration guard: existing configs without an explicit
# observationMode keep the old "unified" default so users
# aren't silently switched to full bidirectional observation.
# New installations (no host block, no credentials) get
# "directional" (all observations on) as the new default.
observation_mode=_normalize_observation_mode(
host_block.get("observationMode")
or raw.get("observationMode")
or ("unified" if _explicitly_configured else "directional")
),
**_resolve_observation(
_normalize_observation_mode(
host_block.get("observationMode")
or raw.get("observationMode")
or ("unified" if _explicitly_configured else "directional")
),
host_block.get("observation") or raw.get("observation"),
),
session_strategy=session_strategy,
session_peer_prefix=session_peer_prefix,
sessions=raw.get("sessions", {}),
raw=raw,
explicitly_configured=_explicitly_configured,
)
@staticmethod
def _git_repo_name(cwd: str) -> str | None:
"""Return the git repo root directory name, or None if not in a repo."""
import subprocess
try:
root = subprocess.run(
["git", "rev-parse", "--show-toplevel"],
capture_output=True, text=True, cwd=cwd, timeout=5,
stdin=subprocess.DEVNULL,
)
if root.returncode == 0:
return Path(root.stdout.strip()).name
except (OSError, subprocess.TimeoutExpired):
pass
return None
# Honcho enforces a 100-char limit on session IDs. Long gateway session keys
# (Matrix "!room:server" + thread event IDs, Telegram supergroup reply
# chains, Slack thread IDs with long workspace prefixes) can overflow this
# limit after sanitization; the Honcho API then rejects every call for that
# session with "session_id too long". See issue #13868.
_HONCHO_SESSION_ID_MAX_LEN = 100
_HONCHO_SESSION_ID_HASH_LEN = 8
@classmethod
def _enforce_session_id_limit(cls, sanitized: str, original: str) -> str:
"""Truncate a sanitized session ID to Honcho's 100-char limit.
The common case (short keys) short-circuits with no modification.
For over-limit keys, keep a prefix of the sanitized ID and append a
deterministic ``-<sha256 prefix>`` suffix so two distinct long keys
that share a leading segment don't collide onto the same truncated ID.
The hash is taken over the *original* pre-sanitization key, so two
inputs that sanitize to the same string still collide intentionally
(same logical session), but two inputs that only share a prefix do not.
"""
max_len = cls._HONCHO_SESSION_ID_MAX_LEN
if len(sanitized) <= max_len:
return sanitized
hash_len = cls._HONCHO_SESSION_ID_HASH_LEN
digest = hashlib.sha256(original.encode("utf-8")).hexdigest()[:hash_len]
# max_len - hash_len - 1 (for the '-' separator) chars of the sanitized
# prefix, then '-<hash>'. Strip any trailing hyphen from the prefix so
# the result doesn't double up on separators.
prefix_len = max_len - hash_len - 1
prefix = sanitized[:prefix_len].rstrip("-")
return f"{prefix}-{digest}"
def resolve_session_name(
self,
cwd: str | None = None,
session_title: str | None = None,
session_id: str | None = None,
gateway_session_key: str | None = None,
) -> str | None:
"""Resolve Honcho session name.
Resolution order:
1. Manual directory override from sessions map
2. Hermes session title (from /title command)
3. Gateway session key (stable per-chat identifier from gateway platforms)
4. per-session strategy Hermes session_id ({timestamp}_{hex})
5. per-repo strategy git repo root directory name
6. per-directory strategy directory basename
7. global strategy workspace name
"""
import re
if not cwd:
cwd = os.getcwd()
# Manual override always wins
manual = self.sessions.get(cwd)
if manual:
return manual
# /title mid-session remap
if session_title:
sanitized = re.sub(r'[^a-zA-Z0-9_-]+', '-', session_title).strip('-')
if sanitized:
if self.session_peer_prefix and self.peer_name:
return f"{self.peer_name}-{sanitized}"
return sanitized
# Gateway session key: stable per-chat identifier passed by the gateway
# (e.g. "agent:main:telegram:dm:8439114563"). Sanitize colons to hyphens
# for Honcho session ID compatibility. This takes priority over strategy-
# based resolution because gateway platforms need per-chat isolation that
# cwd-based strategies cannot provide.
if gateway_session_key:
sanitized = re.sub(r'[^a-zA-Z0-9_-]+', '-', gateway_session_key).strip('-')
if sanitized:
return self._enforce_session_id_limit(sanitized, gateway_session_key)
# per-session: inherit Hermes session_id (new Honcho session each run)
if self.session_strategy == "per-session" and session_id:
if self.session_peer_prefix and self.peer_name:
return f"{self.peer_name}-{session_id}"
return session_id
# per-repo: one Honcho session per git repository
if self.session_strategy == "per-repo":
base = self._git_repo_name(cwd) or Path(cwd).name
if self.session_peer_prefix and self.peer_name:
return f"{self.peer_name}-{base}"
return base
# per-directory: one Honcho session per working directory (default)
if self.session_strategy in {"per-directory", "per-session"}:
base = Path(cwd).name
if self.session_peer_prefix and self.peer_name:
return f"{self.peer_name}-{base}"
return base
# global: single session across all directories
return self.workspace_id
_honcho_client_slot: SingletonSlot = SingletonSlot()
def get_honcho_client(config: HonchoClientConfig | None = None) -> Honcho:
"""Get or create the Honcho client singleton.
When no config is provided, attempts to load ~/.honcho/config.json
first, falling back to environment variables.
Thread-safe: the client is built exactly once even under concurrent
first calls (double-checked locking via ``SingletonSlot``), so racing
threads can't each construct a client and leak the loser's connection.
"""
cached = _honcho_client_slot.peek()
if cached is not None:
return cached
if config is None:
config = HonchoClientConfig.from_global_config()
if not config.api_key and not config.base_url:
raise ValueError(
"Honcho API key not found. "
"Get your API key at https://app.honcho.dev, "
"then run 'hermes honcho setup' or set HONCHO_API_KEY. "
"For local instances, set HONCHO_BASE_URL instead."
)
# Everything below is the expensive part the issue flags: lazy SDK
# install, config resolution, and client construction. Run it inside the
# slot's factory so it executes exactly once even when several threads
# race the first call — the slot's double-checked lock serializes them and
# the losers get the winner's client instead of building their own.
def _build() -> "Honcho":
# Lazy-install the honcho SDK on demand. ensure() honors
# security.allow_lazy_installs (default true). On failure we surface
# the original ImportError-shape message so existing callers still get
# the "go run hermes honcho setup" hint they used to.
try:
from tools.lazy_deps import FeatureUnavailable, ensure as _lazy_ensure
_lazy_ensure("memory.honcho", prompt=False)
except ImportError:
# lazy_deps module missing — fall through to the raw import below.
pass
except Exception:
# FeatureUnavailable or unexpected error. Don't crash here; let the
# actual import attempt produce the canonical error message.
pass
try:
from honcho import Honcho
except ImportError:
raise ImportError(
"honcho-ai is required for Honcho integration. "
"Install it with: pip install honcho-ai "
"(or run `hermes honcho setup` to configure)."
)
# Allow config.yaml honcho.base_url to override the SDK's environment
# mapping, enabling remote self-hosted Honcho deployments without
# requiring the server to live on localhost.
resolved_base_url = config.base_url
resolved_timeout = config.timeout
if not resolved_base_url or resolved_timeout is None:
try:
from hermes_cli.config import load_config
hermes_cfg = load_config()
honcho_cfg = hermes_cfg.get("honcho", {})
if isinstance(honcho_cfg, dict):
if not resolved_base_url:
resolved_base_url = honcho_cfg.get("base_url", "").strip() or None
if resolved_timeout is None:
resolved_timeout = _resolve_optional_float(
honcho_cfg.get("timeout"),
honcho_cfg.get("request_timeout"),
)
except Exception:
pass
# Fall back to the default so an unconfigured install cannot hang
# indefinitely on a stalled Honcho request.
if resolved_timeout is None:
resolved_timeout = _DEFAULT_HTTP_TIMEOUT
if resolved_base_url:
logger.info("Initializing Honcho client (base_url: %s, workspace: %s)", resolved_base_url, config.workspace_id)
else:
logger.info("Initializing Honcho client (host: %s, workspace: %s)", config.host, config.workspace_id)
# Local Honcho instances don't require an API key, but the SDK
# expects a non-empty string. Use a placeholder for local URLs.
# For local: only use config.api_key if the host block explicitly
# sets apiKey (meaning the user wants local auth). Otherwise skip
# the stored key -- it's likely a cloud key that would break local.
_is_local = resolved_base_url and (
"localhost" in resolved_base_url
or "127.0.0.1" in resolved_base_url
or "::1" in resolved_base_url
)
if _is_local:
# Check if the host block has its own apiKey (explicit local auth).
# Auth-skipping is loopback-only: a stored key is likely a cloud key
# that would break a no-auth local server, so we substitute the SDK's
# required-non-empty placeholder unless the host block opts in.
_raw = config.raw or {}
_host_block = (_raw.get("hosts") or {}).get(config.host, {})
_host_has_key = bool(_host_block.get("apiKey"))
effective_api_key = config.api_key if _host_has_key else "local"
else:
effective_api_key = config.api_key
# The Honcho SDK's route builders (e.g. routes.workspaces()) already
# include the version prefix (e.g. "/v3/workspaces"). When a user-supplied
# base_url already ends in a version segment (e.g.
# "http://localhost:38000/v3", "https://honcho.my.ts.net/v3"), concatenating
# the two produces "/v3/v3/workspaces" → 404 on every call. This is a pure
# routing concern independent of host, so strip a trailing version segment
# from ANY base_url — loopback, LAN, custom domain, or cloud alike. The
# SDK then appends its own versioned paths correctly.
if resolved_base_url:
import re as _re
resolved_base_url = _re.sub(r"/v\d+/*$", "", resolved_base_url).rstrip("/")
kwargs: dict = {
"workspace_id": config.workspace_id,
"api_key": effective_api_key,
"environment": config.environment,
}
if resolved_base_url:
kwargs["base_url"] = resolved_base_url
if resolved_timeout is not None:
kwargs["timeout"] = resolved_timeout
return Honcho(**kwargs)
return _honcho_client_slot.get(_build)
def reset_honcho_client() -> None:
"""Reset the Honcho client singleton (useful for testing)."""
_honcho_client_slot.reset()
+7
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@@ -0,0 +1,7 @@
name: honcho
version: 1.0.0
description: "Honcho AI-native memory — cross-session user modeling with dialectic Q&A, semantic search, and persistent conclusions."
pip_dependencies:
- honcho-ai
hooks:
- on_session_end
File diff suppressed because it is too large Load Diff
+38
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@@ -0,0 +1,38 @@
# Mem0 Memory Provider
Server-side LLM fact extraction with semantic search, reranking, and automatic deduplication.
## Requirements
- `pip install mem0ai`
- Mem0 API key from [app.mem0.ai](https://app.mem0.ai)
## Setup
```bash
hermes memory setup # select "mem0"
```
Or manually:
```bash
hermes config set memory.provider mem0
echo "MEM0_API_KEY=your-key" >> ~/.hermes/.env
```
## Config
Config file: `$HERMES_HOME/mem0.json`
| Key | Default | Description |
|-----|---------|-------------|
| `user_id` | `hermes-user` | User identifier on Mem0 |
| `agent_id` | `hermes` | Agent identifier |
| `rerank` | `true` | Enable reranking for recall |
## Tools
| Tool | Description |
|------|-------------|
| `mem0_profile` | All stored memories about the user |
| `mem0_search` | Semantic search with optional reranking |
| `mem0_conclude` | Store a fact verbatim (no LLM extraction) |
+374
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@@ -0,0 +1,374 @@
"""Mem0 memory plugin — MemoryProvider interface.
Server-side LLM fact extraction, semantic search with reranking, and
automatic deduplication via the Mem0 Platform API.
Original PR #2933 by kartik-mem0, adapted to MemoryProvider ABC.
Config via environment variables:
MEM0_API_KEY Mem0 Platform API key (required)
MEM0_USER_ID User identifier (default: hermes-user)
MEM0_AGENT_ID Agent identifier (default: hermes)
Or via $HERMES_HOME/mem0.json.
"""
from __future__ import annotations
import json
import logging
import os
import threading
import time
from typing import Any, Dict, List
from agent.memory_provider import MemoryProvider
from tools.registry import tool_error
logger = logging.getLogger(__name__)
# Circuit breaker: after this many consecutive failures, pause API calls
# for _BREAKER_COOLDOWN_SECS to avoid hammering a down server.
_BREAKER_THRESHOLD = 5
_BREAKER_COOLDOWN_SECS = 120
# ---------------------------------------------------------------------------
# Config
# ---------------------------------------------------------------------------
def _load_config() -> dict:
"""Load config from env vars, with $HERMES_HOME/mem0.json overrides.
Environment variables provide defaults; mem0.json (if present) overrides
individual keys. This avoids a silent failure when the JSON file exists
but is missing fields like ``api_key`` that the user set in ``.env``.
"""
from hermes_constants import get_hermes_home
config = {
"api_key": os.environ.get("MEM0_API_KEY", ""),
"user_id": os.environ.get("MEM0_USER_ID", "hermes-user"),
"agent_id": os.environ.get("MEM0_AGENT_ID", "hermes"),
"rerank": True,
"keyword_search": False,
}
config_path = get_hermes_home() / "mem0.json"
if config_path.exists():
try:
file_cfg = json.loads(config_path.read_text(encoding="utf-8"))
config.update({k: v for k, v in file_cfg.items()
if v is not None and v != ""})
except Exception:
pass
return config
# ---------------------------------------------------------------------------
# Tool schemas
# ---------------------------------------------------------------------------
PROFILE_SCHEMA = {
"name": "mem0_profile",
"description": (
"Retrieve all stored memories about the user — preferences, facts, "
"project context. Fast, no reranking. Use at conversation start."
),
"parameters": {"type": "object", "properties": {}, "required": []},
}
SEARCH_SCHEMA = {
"name": "mem0_search",
"description": (
"Search memories by meaning. Returns relevant facts ranked by similarity. "
"Set rerank=true for higher accuracy on important queries."
),
"parameters": {
"type": "object",
"properties": {
"query": {"type": "string", "description": "What to search for."},
"rerank": {"type": "boolean", "description": "Enable reranking for precision (default: false)."},
"top_k": {"type": "integer", "description": "Max results (default: 10, max: 50)."},
},
"required": ["query"],
},
}
CONCLUDE_SCHEMA = {
"name": "mem0_conclude",
"description": (
"Store a durable fact about the user. Stored verbatim (no LLM extraction). "
"Use for explicit preferences, corrections, or decisions."
),
"parameters": {
"type": "object",
"properties": {
"conclusion": {"type": "string", "description": "The fact to store."},
},
"required": ["conclusion"],
},
}
# ---------------------------------------------------------------------------
# MemoryProvider implementation
# ---------------------------------------------------------------------------
class Mem0MemoryProvider(MemoryProvider):
"""Mem0 Platform memory with server-side extraction and semantic search."""
def __init__(self):
self._config = None
self._client = None
self._client_lock = threading.Lock()
self._api_key = ""
self._user_id = "hermes-user"
self._agent_id = "hermes"
self._rerank = True
self._prefetch_result = ""
self._prefetch_lock = threading.Lock()
self._prefetch_thread = None
self._sync_thread = None
# Circuit breaker state
self._consecutive_failures = 0
self._breaker_open_until = 0.0
@property
def name(self) -> str:
return "mem0"
def is_available(self) -> bool:
cfg = _load_config()
return bool(cfg.get("api_key"))
def save_config(self, values, hermes_home):
"""Write config to $HERMES_HOME/mem0.json."""
import json
from pathlib import Path
config_path = Path(hermes_home) / "mem0.json"
existing = {}
if config_path.exists():
try:
existing = json.loads(config_path.read_text())
except Exception:
pass
existing.update(values)
from utils import atomic_json_write
atomic_json_write(config_path, existing, mode=0o600)
def get_config_schema(self):
return [
{"key": "api_key", "description": "Mem0 Platform API key", "secret": True, "required": True, "env_var": "MEM0_API_KEY", "url": "https://app.mem0.ai"},
{"key": "user_id", "description": "User identifier", "default": "hermes-user"},
{"key": "agent_id", "description": "Agent identifier", "default": "hermes"},
{"key": "rerank", "description": "Enable reranking for recall", "default": "true", "choices": ["true", "false"]},
]
def _get_client(self):
"""Thread-safe client accessor with lazy initialization."""
with self._client_lock:
if self._client is not None:
return self._client
try:
from mem0 import MemoryClient
self._client = MemoryClient(api_key=self._api_key)
return self._client
except ImportError:
raise RuntimeError("mem0 package not installed. Run: pip install mem0ai")
def _is_breaker_open(self) -> bool:
"""Return True if the circuit breaker is tripped (too many failures)."""
if self._consecutive_failures < _BREAKER_THRESHOLD:
return False
if time.monotonic() >= self._breaker_open_until:
# Cooldown expired — reset and allow a retry
self._consecutive_failures = 0
return False
return True
def _record_success(self):
self._consecutive_failures = 0
def _record_failure(self):
self._consecutive_failures += 1
if self._consecutive_failures >= _BREAKER_THRESHOLD:
self._breaker_open_until = time.monotonic() + _BREAKER_COOLDOWN_SECS
logger.warning(
"Mem0 circuit breaker tripped after %d consecutive failures. "
"Pausing API calls for %ds.",
self._consecutive_failures, _BREAKER_COOLDOWN_SECS,
)
def initialize(self, session_id: str, **kwargs) -> None:
self._config = _load_config()
self._api_key = self._config.get("api_key", "")
# Prefer gateway-provided user_id for per-user memory scoping;
# fall back to config/env default for CLI (single-user) sessions.
self._user_id = kwargs.get("user_id") or self._config.get("user_id", "hermes-user")
self._agent_id = self._config.get("agent_id", "hermes")
self._rerank = self._config.get("rerank", True)
def _read_filters(self) -> Dict[str, Any]:
"""Filters for search/get_all — scoped to user only for cross-session recall."""
return {"user_id": self._user_id}
def _write_filters(self) -> Dict[str, Any]:
"""Filters for add — scoped to user + agent for attribution."""
return {"user_id": self._user_id, "agent_id": self._agent_id}
@staticmethod
def _unwrap_results(response: Any) -> list:
"""Normalize Mem0 API response — v2 wraps results in {"results": [...]}."""
if isinstance(response, dict):
return response.get("results", [])
if isinstance(response, list):
return response
return []
def system_prompt_block(self) -> str:
return (
"# Mem0 Memory\n"
f"Active. User: {self._user_id}.\n"
"Use mem0_search to find memories, mem0_conclude to store facts, "
"mem0_profile for a full overview."
)
def prefetch(self, query: str, *, session_id: str = "") -> str:
if self._prefetch_thread and self._prefetch_thread.is_alive():
self._prefetch_thread.join(timeout=3.0)
with self._prefetch_lock:
result = self._prefetch_result
self._prefetch_result = ""
if not result:
return ""
return f"## Mem0 Memory\n{result}"
def queue_prefetch(self, query: str, *, session_id: str = "") -> None:
if self._is_breaker_open():
return
def _run():
try:
client = self._get_client()
results = self._unwrap_results(client.search(
query=query,
filters=self._read_filters(),
rerank=self._rerank,
top_k=5,
))
if results:
lines = [r.get("memory", "") for r in results if r.get("memory")]
with self._prefetch_lock:
self._prefetch_result = "\n".join(f"- {l}" for l in lines)
self._record_success()
except Exception as e:
self._record_failure()
logger.debug("Mem0 prefetch failed: %s", e)
self._prefetch_thread = threading.Thread(target=_run, daemon=True, name="mem0-prefetch")
self._prefetch_thread.start()
def sync_turn(self, user_content: str, assistant_content: str, *, session_id: str = "") -> None:
"""Send the turn to Mem0 for server-side fact extraction (non-blocking)."""
if self._is_breaker_open():
return
def _sync():
try:
client = self._get_client()
messages = [
{"role": "user", "content": user_content},
{"role": "assistant", "content": assistant_content},
]
client.add(messages, **self._write_filters())
self._record_success()
except Exception as e:
self._record_failure()
logger.warning("Mem0 sync failed: %s", e)
# Wait for any previous sync before starting a new one
if self._sync_thread and self._sync_thread.is_alive():
self._sync_thread.join(timeout=5.0)
self._sync_thread = threading.Thread(target=_sync, daemon=True, name="mem0-sync")
self._sync_thread.start()
def get_tool_schemas(self) -> List[Dict[str, Any]]:
return [PROFILE_SCHEMA, SEARCH_SCHEMA, CONCLUDE_SCHEMA]
def handle_tool_call(self, tool_name: str, args: dict, **kwargs) -> str:
if self._is_breaker_open():
return json.dumps({
"error": "Mem0 API temporarily unavailable (multiple consecutive failures). Will retry automatically."
})
try:
client = self._get_client()
except Exception as e:
return tool_error(str(e))
if tool_name == "mem0_profile":
try:
memories = self._unwrap_results(client.get_all(filters=self._read_filters()))
self._record_success()
if not memories:
return json.dumps({"result": "No memories stored yet."})
lines = [m.get("memory", "") for m in memories if m.get("memory")]
return json.dumps({"result": "\n".join(lines), "count": len(lines)})
except Exception as e:
self._record_failure()
return tool_error(f"Failed to fetch profile: {e}")
elif tool_name == "mem0_search":
query = args.get("query", "")
if not query:
return tool_error("Missing required parameter: query")
rerank = args.get("rerank", False)
top_k = min(int(args.get("top_k", 10)), 50)
try:
results = self._unwrap_results(client.search(
query=query,
filters=self._read_filters(),
rerank=rerank,
top_k=top_k,
))
self._record_success()
if not results:
return json.dumps({"result": "No relevant memories found."})
items = [{"memory": r.get("memory", ""), "score": r.get("score", 0)} for r in results]
return json.dumps({"results": items, "count": len(items)})
except Exception as e:
self._record_failure()
return tool_error(f"Search failed: {e}")
elif tool_name == "mem0_conclude":
conclusion = args.get("conclusion", "")
if not conclusion:
return tool_error("Missing required parameter: conclusion")
try:
client.add(
[{"role": "user", "content": conclusion}],
**self._write_filters(),
infer=False,
)
self._record_success()
return json.dumps({"result": "Fact stored."})
except Exception as e:
self._record_failure()
return tool_error(f"Failed to store: {e}")
return tool_error(f"Unknown tool: {tool_name}")
def shutdown(self) -> None:
for t in (self._prefetch_thread, self._sync_thread):
if t and t.is_alive():
t.join(timeout=5.0)
with self._client_lock:
self._client = None
def register(ctx) -> None:
"""Register Mem0 as a memory provider plugin."""
ctx.register_memory_provider(Mem0MemoryProvider())
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name: mem0
version: 1.0.0
description: "Mem0 — server-side LLM fact extraction with semantic search, reranking, and automatic deduplication."
pip_dependencies:
- mem0ai
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# OpenViking Memory Provider
Context database by Volcengine (ByteDance) with filesystem-style knowledge hierarchy, tiered retrieval, and automatic memory extraction.
## Requirements
- `pip install openviking`
- OpenViking server running (`openviking-server`)
- Embedding + VLM model configured in `~/.openviking/ov.conf`
## Setup
```bash
hermes memory setup # select "openviking"
```
Or manually:
```bash
hermes config set memory.provider openviking
echo "OPENVIKING_ENDPOINT=http://localhost:1933" >> ~/.hermes/.env
```
## Config
All config via environment variables in `.env`:
| Env Var | Default | Description |
|---------|---------|-------------|
| `OPENVIKING_ENDPOINT` | `http://127.0.0.1:1933` | Server URL |
| `OPENVIKING_API_KEY` | (none) | API key (optional) |
## Tools
| Tool | Description |
|------|-------------|
| `viking_search` | Semantic search with fast/deep/auto modes |
| `viking_read` | Read content at a viking:// URI (abstract/overview/full) |
| `viking_browse` | Filesystem-style navigation (list/tree/stat) |
| `viking_remember` | Store a fact for extraction on session commit |
| `viking_add_resource` | Ingest URLs/docs into the knowledge base |
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"""OpenViking memory plugin — full bidirectional MemoryProvider interface.
Context database by Volcengine (ByteDance) that organizes agent knowledge
into a filesystem hierarchy (viking:// URIs) with tiered context loading,
automatic memory extraction, and session management.
Original PR #3369 by Mibayy, rewritten to use the full OpenViking session
lifecycle instead of read-only search endpoints.
Config via environment variables (profile-scoped via each profile's .env):
OPENVIKING_ENDPOINT Server URL (default: http://127.0.0.1:1933)
OPENVIKING_API_KEY API key (required for authenticated servers)
OPENVIKING_ACCOUNT Tenant account (default: default)
OPENVIKING_USER Tenant user (default: default)
OPENVIKING_AGENT Tenant agent (default: hermes)
Capabilities:
- Automatic memory extraction on session commit (6 categories)
- Tiered context: L0 (~100 tokens), L1 (~2k), L2 (full)
- Semantic search with hierarchical directory retrieval
- Filesystem-style browsing via viking:// URIs
- Resource ingestion (URLs, docs, code)
"""
from __future__ import annotations
import atexit
import json
import logging
import mimetypes
import os
import tempfile
import threading
import uuid
import zipfile
from pathlib import Path
from typing import Any, Dict, List, Optional
from urllib.parse import urlparse
from urllib.request import url2pathname
from agent.memory_provider import MemoryProvider
from tools.registry import tool_error
logger = logging.getLogger(__name__)
_DEFAULT_ENDPOINT = "http://127.0.0.1:1933"
_TIMEOUT = 30.0
_REMOTE_RESOURCE_PREFIXES = ("http://", "https://", "git@", "ssh://", "git://")
# Maps the viking_remember `category` enum to a viking:// subdirectory.
# Keep in sync with REMEMBER_SCHEMA.parameters.properties.category.enum.
_CATEGORY_SUBDIR_MAP = {
"preference": "preferences",
"entity": "entities",
"event": "events",
"case": "cases",
"pattern": "patterns",
}
_DEFAULT_MEMORY_SUBDIR = "preferences"
# Maps the built-in memory tool's `target` ("user" vs "memory") to a subdir
# for on_memory_write mirroring. User profile facts → preferences; agent
# notes / observations → patterns. Anything unknown falls back to the default.
_MEMORY_WRITE_TARGET_SUBDIR_MAP = {
"user": "preferences",
"memory": "patterns",
}
# ---------------------------------------------------------------------------
# Process-level atexit safety net — ensures pending sessions are committed
# even if shutdown_memory_provider is never called (e.g. gateway crash,
# SIGKILL, or exception in the session expiry watcher preventing shutdown).
# ---------------------------------------------------------------------------
_last_active_provider: Optional["OpenVikingMemoryProvider"] = None
def _atexit_commit_sessions():
"""Fire on_session_end for the last active provider on process exit."""
global _last_active_provider
provider = _last_active_provider
if provider is None:
return
_last_active_provider = None
try:
provider.on_session_end([])
except Exception:
pass # best-effort at shutdown time
atexit.register(_atexit_commit_sessions)
# ---------------------------------------------------------------------------
# HTTP helper — uses httpx to avoid requiring the openviking SDK
# ---------------------------------------------------------------------------
def _get_httpx():
"""Lazy import httpx."""
try:
import httpx
return httpx
except ImportError:
return None
class _VikingClient:
"""Thin HTTP client for the OpenViking REST API."""
def __init__(self, endpoint: str, api_key: str = "",
account: str = "", user: str = "", agent: str = ""):
self._endpoint = endpoint.rstrip("/")
self._api_key = api_key
self._account = account or os.environ.get("OPENVIKING_ACCOUNT", "default")
self._user = user or os.environ.get("OPENVIKING_USER", "default")
self._agent = agent or os.environ.get("OPENVIKING_AGENT", "hermes")
self._httpx = _get_httpx()
if self._httpx is None:
raise ImportError("httpx is required for OpenViking: pip install httpx")
def _headers(self) -> dict:
# Always send tenant headers when account/user are configured.
# OpenViking 0.3.x requires X-OpenViking-Account and X-OpenViking-User
# for ROOT API key requests to tenant-scoped APIs — omitting them
# causes INVALID_ARGUMENT errors even when account="default".
# User-level keys can omit them (server derives tenancy from the key),
# but ROOT keys must always include them explicitly.
h = {
"Content-Type": "application/json",
"X-OpenViking-Agent": self._agent,
}
if self._account:
h["X-OpenViking-Account"] = self._account
if self._user:
h["X-OpenViking-User"] = self._user
if self._api_key:
h["X-API-Key"] = self._api_key
h["Authorization"] = "Bearer " + self._api_key
return h
def _url(self, path: str) -> str:
return f"{self._endpoint}{path}"
def _multipart_headers(self) -> dict:
headers = self._headers()
headers.pop("Content-Type", None)
return headers
def _parse_response(self, resp) -> dict:
try:
data = resp.json()
except Exception:
data = None
if resp.status_code >= 400:
if isinstance(data, dict):
error = data.get("error")
if isinstance(error, dict):
code = error.get("code", "HTTP_ERROR")
message = error.get("message", resp.text)
raise RuntimeError(f"{code}: {message}")
if data.get("status") == "error":
raise RuntimeError(str(data))
resp.raise_for_status()
if isinstance(data, dict) and data.get("status") == "error":
error = data.get("error")
if isinstance(error, dict):
code = error.get("code", "OPENVIKING_ERROR")
message = error.get("message", "")
raise RuntimeError(f"{code}: {message}")
raise RuntimeError(str(data))
if data is None:
return {}
return data
def get(self, path: str, **kwargs) -> dict:
resp = self._httpx.get(
self._url(path), headers=self._headers(), timeout=_TIMEOUT, **kwargs
)
return self._parse_response(resp)
def post(self, path: str, payload: dict = None, **kwargs) -> dict:
resp = self._httpx.post(
self._url(path), json=payload or {}, headers=self._headers(),
timeout=_TIMEOUT, **kwargs
)
return self._parse_response(resp)
def upload_temp_file(self, file_path: Path) -> str:
mime_type = mimetypes.guess_type(file_path.name)[0] or "application/octet-stream"
with file_path.open("rb") as f:
resp = self._httpx.post(
self._url("/api/v1/resources/temp_upload"),
files={"file": (file_path.name, f, mime_type)},
headers=self._multipart_headers(),
timeout=_TIMEOUT,
)
data = self._parse_response(resp)
result = data.get("result", {})
temp_file_id = result.get("temp_file_id", "")
if not temp_file_id:
raise RuntimeError("OpenViking temp upload did not return temp_file_id")
return temp_file_id
def health(self) -> bool:
try:
resp = self._httpx.get(
self._url("/health"), headers=self._headers(), timeout=3.0
)
return resp.status_code == 200
except Exception:
return False
# ---------------------------------------------------------------------------
# Tool schemas
# ---------------------------------------------------------------------------
SEARCH_SCHEMA = {
"name": "viking_search",
"description": (
"Semantic search over the OpenViking knowledge base. "
"Returns ranked results with viking:// URIs for deeper reading. "
"Use mode='deep' for complex queries that need reasoning across "
"multiple sources, 'fast' for simple lookups."
),
"parameters": {
"type": "object",
"properties": {
"query": {"type": "string", "description": "Search query."},
"mode": {
"type": "string", "enum": ["auto", "fast", "deep"],
"description": "Search depth (default: auto).",
},
"scope": {
"type": "string",
"description": "Viking URI prefix to scope search (e.g. 'viking://resources/docs/').",
},
"limit": {"type": "integer", "description": "Max results (default: 10)."},
},
"required": ["query"],
},
}
READ_SCHEMA = {
"name": "viking_read",
"description": (
"Read content at a viking:// URI. Three detail levels:\n"
" abstract — ~100 token summary (L0)\n"
" overview — ~2k token key points (L1)\n"
" full — complete content (L2)\n"
"Start with abstract/overview, only use full when you need details."
),
"parameters": {
"type": "object",
"properties": {
"uri": {"type": "string", "description": "viking:// URI to read."},
"level": {
"type": "string", "enum": ["abstract", "overview", "full"],
"description": "Detail level (default: overview).",
},
},
"required": ["uri"],
},
}
BROWSE_SCHEMA = {
"name": "viking_browse",
"description": (
"Browse the OpenViking knowledge store like a filesystem.\n"
" list — show directory contents\n"
" tree — show hierarchy\n"
" stat — show metadata for a URI"
),
"parameters": {
"type": "object",
"properties": {
"action": {
"type": "string", "enum": ["tree", "list", "stat"],
"description": "Browse action.",
},
"path": {
"type": "string",
"description": "Viking URI path (default: viking://). Examples: 'viking://resources/', 'viking://user/memories/'.",
},
},
"required": ["action"],
},
}
REMEMBER_SCHEMA = {
"name": "viking_remember",
"description": (
"Explicitly store a fact or memory in the OpenViking knowledge base. "
"Use for important information the agent should remember long-term. "
"The system automatically categorizes and indexes the memory."
),
"parameters": {
"type": "object",
"properties": {
"content": {"type": "string", "description": "The information to remember."},
"category": {
"type": "string",
"enum": ["preference", "entity", "event", "case", "pattern"],
"description": "Memory category (default: auto-detected).",
},
},
"required": ["content"],
},
}
ADD_RESOURCE_SCHEMA = {
"name": "viking_add_resource",
"description": (
"Add a remote URL or local file/directory to the OpenViking knowledge base. "
"Remote resources must be public http(s), git, or ssh URLs. "
"Local files are uploaded first using OpenViking temp_upload. "
"The system automatically parses, indexes, and generates summaries."
),
"parameters": {
"type": "object",
"properties": {
"url": {"type": "string", "description": "Remote URL or local file/directory path to add."},
"reason": {
"type": "string",
"description": "Why this resource is relevant (improves search).",
},
"to": {
"type": "string",
"description": "Optional target viking:// URI for the resource.",
},
"parent": {
"type": "string",
"description": "Optional parent viking:// URI. Cannot be used with to.",
},
"instruction": {
"type": "string",
"description": "Optional processing instruction for semantic extraction.",
},
"wait": {
"type": "boolean",
"description": "Whether to wait for processing to complete.",
},
"timeout": {
"type": "number",
"description": "Timeout in seconds when wait is true.",
},
},
"required": ["url"],
},
}
def _zip_directory(dir_path: Path) -> Path:
"""Create a temporary zip file containing a directory tree."""
root = dir_path.resolve()
zip_path = Path(tempfile.gettempdir()) / f"openviking_upload_{uuid.uuid4().hex}.zip"
with zipfile.ZipFile(zip_path, "w", zipfile.ZIP_DEFLATED) as zipf:
for file_path in dir_path.rglob("*"):
if file_path.is_symlink():
continue
if file_path.is_file():
try:
file_path.resolve().relative_to(root)
except ValueError:
continue
arcname = str(file_path.relative_to(dir_path)).replace("\\", "/")
zipf.write(file_path, arcname=arcname)
return zip_path
def _is_windows_absolute_path(value: str) -> bool:
return (
len(value) >= 3
and value[0].isalpha()
and value[1] == ":"
and value[2] in {"/", "\\"}
)
def _is_remote_resource_source(value: str) -> bool:
return value.startswith(_REMOTE_RESOURCE_PREFIXES)
def _is_local_path_reference(value: str) -> bool:
if not value or "\n" in value or "\r" in value:
return False
if _is_remote_resource_source(value):
return False
if _is_windows_absolute_path(value):
return True
return (
value.startswith(("/", "./", "../", "~/", ".\\", "..\\", "~\\"))
or "/" in value
or "\\" in value
)
def _path_from_file_uri(uri: str) -> Path | str:
parsed = urlparse(uri)
if parsed.netloc not in {"", "localhost"}:
return f"Unsupported non-local file URI: {uri}"
return Path(url2pathname(parsed.path)).expanduser()
# ---------------------------------------------------------------------------
# MemoryProvider implementation
# ---------------------------------------------------------------------------
class OpenVikingMemoryProvider(MemoryProvider):
"""Full bidirectional memory via OpenViking context database."""
def __init__(self):
self._client: Optional[_VikingClient] = None
self._endpoint = ""
self._api_key = ""
self._session_id = ""
self._turn_count = 0
self._sync_thread: Optional[threading.Thread] = None
self._prefetch_result = ""
self._prefetch_lock = threading.Lock()
self._prefetch_thread: Optional[threading.Thread] = None
@property
def name(self) -> str:
return "openviking"
def is_available(self) -> bool:
"""Check if OpenViking endpoint is configured. No network calls."""
return bool(os.environ.get("OPENVIKING_ENDPOINT"))
def get_config_schema(self):
return [
{
"key": "endpoint",
"description": "OpenViking server URL",
"required": True,
"default": _DEFAULT_ENDPOINT,
"env_var": "OPENVIKING_ENDPOINT",
},
{
"key": "api_key",
"description": "OpenViking API key (leave blank for local dev mode)",
"secret": True,
"env_var": "OPENVIKING_API_KEY",
},
{
"key": "account",
"description": "OpenViking tenant account ID ([default], used when local mode, OPENVIKING_API_KEY is empty)",
"default": "default",
"env_var": "OPENVIKING_ACCOUNT",
},
{
"key": "user",
"description": "OpenViking user ID within the account ([default], used when local mode, OPENVIKING_API_KEY is empty)",
"default": "default",
"env_var": "OPENVIKING_USER",
},
{
"key": "agent",
"description": "OpenViking agent ID within the account ([hermes], useful in multi-agent mode)",
"default": "hermes",
"env_var": "OPENVIKING_AGENT",
},
]
def initialize(self, session_id: str, **kwargs) -> None:
self._endpoint = os.environ.get("OPENVIKING_ENDPOINT", _DEFAULT_ENDPOINT)
self._api_key = os.environ.get("OPENVIKING_API_KEY", "")
self._account = os.environ.get("OPENVIKING_ACCOUNT", "default")
self._user = os.environ.get("OPENVIKING_USER", "default")
self._agent = os.environ.get("OPENVIKING_AGENT", "hermes")
self._session_id = session_id
self._turn_count = 0
try:
self._client = _VikingClient(
self._endpoint, self._api_key,
account=self._account, user=self._user, agent=self._agent,
)
if not self._client.health():
logger.warning("OpenViking server at %s is not reachable", self._endpoint)
self._client = None
except ImportError:
logger.warning("httpx not installed — OpenViking plugin disabled")
self._client = None
# Register as the last active provider for atexit safety net
global _last_active_provider
_last_active_provider = self
def system_prompt_block(self) -> str:
if not self._client:
return ""
# Provide brief info about the knowledge base
try:
# Check what's in the knowledge base via a root listing
resp = self._client.get("/api/v1/fs/ls", params={"uri": "viking://"})
result = resp.get("result", [])
children = len(result) if isinstance(result, list) else 0
if children == 0:
return ""
return (
"# OpenViking Knowledge Base\n"
f"Active. Endpoint: {self._endpoint}\n"
"Use viking_search to find information, viking_read for details "
"(abstract/overview/full), viking_browse to explore.\n"
"Use viking_remember to store facts, viking_add_resource to index URLs/docs."
)
except Exception as e:
logger.warning("OpenViking system_prompt_block failed: %s", e)
return (
"# OpenViking Knowledge Base\n"
f"Active. Endpoint: {self._endpoint}\n"
"Use viking_search, viking_read, viking_browse, "
"viking_remember, viking_add_resource."
)
def prefetch(self, query: str, *, session_id: str = "") -> str:
"""Return prefetched results from the background thread."""
if self._prefetch_thread and self._prefetch_thread.is_alive():
self._prefetch_thread.join(timeout=3.0)
with self._prefetch_lock:
result = self._prefetch_result
self._prefetch_result = ""
if not result:
return ""
return f"## OpenViking Context\n{result}"
def queue_prefetch(self, query: str, *, session_id: str = "") -> None:
"""Fire a background search to pre-load relevant context."""
if not self._client or not query:
return
def _run():
try:
client = _VikingClient(
self._endpoint, self._api_key,
account=self._account, user=self._user, agent=self._agent,
)
resp = client.post("/api/v1/search/find", {
"query": query,
"top_k": 5,
})
result = resp.get("result", {})
parts = []
for ctx_type in ("memories", "resources"):
items = result.get(ctx_type, [])
for item in items[:3]:
uri = item.get("uri", "")
abstract = item.get("abstract", "")
score = item.get("score", 0)
if abstract:
parts.append(f"- [{score:.2f}] {abstract} ({uri})")
if parts:
with self._prefetch_lock:
self._prefetch_result = "\n".join(parts)
except Exception as e:
logger.debug("OpenViking prefetch failed: %s", e)
self._prefetch_thread = threading.Thread(
target=_run, daemon=True, name="openviking-prefetch"
)
self._prefetch_thread.start()
def sync_turn(self, user_content: str, assistant_content: str, *, session_id: str = "") -> None:
"""Record the conversation turn in OpenViking's session (non-blocking)."""
if not self._client:
return
self._turn_count += 1
def _sync():
try:
client = _VikingClient(
self._endpoint, self._api_key,
account=self._account, user=self._user, agent=self._agent,
)
sid = self._session_id
# Add user message
client.post(f"/api/v1/sessions/{sid}/messages", {
"role": "user",
"content": user_content[:4000], # trim very long messages
})
# Add assistant message
client.post(f"/api/v1/sessions/{sid}/messages", {
"role": "assistant",
"content": assistant_content[:4000],
})
except Exception as e:
logger.debug("OpenViking sync_turn failed: %s", e)
# Wait for any previous sync to finish before starting a new one
if self._sync_thread and self._sync_thread.is_alive():
self._sync_thread.join(timeout=5.0)
self._sync_thread = threading.Thread(
target=_sync, daemon=True, name="openviking-sync"
)
self._sync_thread.start()
def on_session_end(self, messages: List[Dict[str, Any]]) -> None:
"""Commit the session to trigger memory extraction.
OpenViking automatically extracts 6 categories of memories:
profile, preferences, entities, events, cases, and patterns.
"""
if not self._client:
return
# Wait for any pending sync to finish first — do this before the
# turn_count check so the last turn's messages are flushed even if
# the count hasn't been incremented yet.
if self._sync_thread and self._sync_thread.is_alive():
self._sync_thread.join(timeout=10.0)
if self._turn_count == 0:
return
try:
self._client.post(f"/api/v1/sessions/{self._session_id}/commit")
logger.info("OpenViking session %s committed (%d turns)", self._session_id, self._turn_count)
except Exception as e:
logger.warning("OpenViking session commit failed: %s", e)
def _build_memory_uri(self, subdir: str) -> str:
"""Build a viking:// memory URI under the configured user/agent/subdir."""
slug = uuid.uuid4().hex[:12]
return f"viking://user/{self._user}/agent/{self._agent}/memories/{subdir}/mem_{slug}.md"
def on_memory_write(
self,
action: str,
target: str,
content: str,
metadata: Optional[Dict[str, Any]] = None,
) -> None:
"""Mirror built-in memory writes to OpenViking via content/write."""
if not self._client or action != "add" or not content:
return
subdir = _MEMORY_WRITE_TARGET_SUBDIR_MAP.get(target, _DEFAULT_MEMORY_SUBDIR)
uri = self._build_memory_uri(subdir)
def _write():
try:
client = _VikingClient(
self._endpoint, self._api_key,
account=self._account, user=self._user, agent=self._agent,
)
client.post("/api/v1/content/write", {
"uri": uri,
"content": content,
"mode": "create",
})
except Exception as e:
logger.debug("OpenViking memory mirror failed: %s", e)
t = threading.Thread(target=_write, daemon=True, name="openviking-memwrite")
t.start()
def get_tool_schemas(self) -> List[Dict[str, Any]]:
return [SEARCH_SCHEMA, READ_SCHEMA, BROWSE_SCHEMA, REMEMBER_SCHEMA, ADD_RESOURCE_SCHEMA]
def handle_tool_call(self, tool_name: str, args: dict, **kwargs) -> str:
if not self._client:
return tool_error("OpenViking server not connected")
try:
if tool_name == "viking_search":
return self._tool_search(args)
elif tool_name == "viking_read":
return self._tool_read(args)
elif tool_name == "viking_browse":
return self._tool_browse(args)
elif tool_name == "viking_remember":
return self._tool_remember(args)
elif tool_name == "viking_add_resource":
return self._tool_add_resource(args)
return tool_error(f"Unknown tool: {tool_name}")
except Exception as e:
return tool_error(str(e))
def shutdown(self) -> None:
# Wait for background threads to finish
for t in (self._sync_thread, self._prefetch_thread):
if t and t.is_alive():
t.join(timeout=5.0)
# Clear atexit reference so it doesn't double-commit
global _last_active_provider
if _last_active_provider is self:
_last_active_provider = None
# -- Tool implementations ------------------------------------------------
@staticmethod
def _unwrap_result(resp: Any) -> Any:
"""Return OpenViking payload body regardless of wrapped/unwrapped shape."""
if isinstance(resp, dict) and "result" in resp:
return resp.get("result")
return resp
@staticmethod
def _normalize_summary_uri(uri: str) -> str:
"""Map pseudo summary files to their parent directory URI for L0/L1 reads."""
if not uri:
return uri
for suffix in ("/.abstract.md", "/.overview.md", "/.read.md", "/.full.md"):
if uri.endswith(suffix):
return uri[: -len(suffix)] or "viking://"
return uri
def _is_directory_uri(self, uri: str) -> bool | None:
"""Probe fs/stat to decide if a URI is a directory.
Returns True/False when the server answers cleanly, and None when the
probe itself fails (network error, unexpected shape). Callers should
treat None as "unknown" and fall back to the exception-based path.
"""
try:
resp = self._client.get("/api/v1/fs/stat", params={"uri": uri})
except Exception:
return None
result = self._unwrap_result(resp)
if isinstance(result, dict):
if "isDir" in result:
return bool(result.get("isDir"))
if "is_dir" in result:
return bool(result.get("is_dir"))
if result.get("type") == "dir":
return True
if result.get("type") == "file":
return False
return None
def _tool_search(self, args: dict) -> str:
query = args.get("query", "")
if not query:
return tool_error("query is required")
payload: Dict[str, Any] = {"query": query}
mode = args.get("mode", "auto")
if mode != "auto":
payload["mode"] = mode
if args.get("scope"):
payload["target_uri"] = args["scope"]
if args.get("limit"):
payload["top_k"] = args["limit"]
resp = self._client.post("/api/v1/search/find", payload)
result = resp.get("result", {})
# Format results for the model — keep it concise
scored_entries = []
for ctx_type in ("memories", "resources", "skills"):
items = result.get(ctx_type, [])
for item in items:
raw_score = item.get("score")
sort_score = raw_score if raw_score is not None else 0.0
entry = {
"uri": item.get("uri", ""),
"type": ctx_type.rstrip("s"),
"score": round(raw_score, 3) if raw_score is not None else 0.0,
"abstract": item.get("abstract", ""),
}
if item.get("relations"):
entry["related"] = [r.get("uri") for r in item["relations"][:3]]
scored_entries.append((sort_score, entry))
scored_entries.sort(key=lambda x: x[0], reverse=True)
formatted = [entry for _, entry in scored_entries]
return json.dumps({
"results": formatted,
"total": result.get("total", len(formatted)),
}, ensure_ascii=False)
def _tool_read(self, args: dict) -> str:
uri = args.get("uri", "")
if not uri:
return tool_error("uri is required")
level = args.get("level", "overview")
summary_level = level in {"abstract", "overview"}
# OpenViking expects directory URIs for pseudo summary files
# (e.g. viking://user/hermes/.overview.md).
resolved_uri = self._normalize_summary_uri(uri) if summary_level else uri
used_fallback = False
# abstract/overview endpoints are directory-only on OpenViking
# (v0.3.x returns 500/412 for file URIs). When the caller asks for a
# summary level on a non-pseudo URI, probe fs/stat first and route
# file URIs straight to /content/read instead of eating a failing
# round-trip. The pseudo-URI path already points at a directory, so
# skip the probe there.
if summary_level and resolved_uri == uri:
is_dir = self._is_directory_uri(uri)
if is_dir is False:
resolved_uri = uri
used_fallback = True
# Map our level names to OpenViking GET endpoints.
endpoint = "/api/v1/content/read"
if not used_fallback:
if level == "abstract":
endpoint = "/api/v1/content/abstract"
elif level == "overview":
endpoint = "/api/v1/content/overview"
try:
resp = self._client.get(endpoint, params={"uri": resolved_uri})
except Exception:
# OpenViking may return HTTP 500 for abstract/overview reads on normal
# file URIs (mem_*.md). For those, gracefully fallback to full read.
if not summary_level or resolved_uri != uri or used_fallback:
raise
resp = self._client.get("/api/v1/content/read", params={"uri": uri})
used_fallback = True
result = self._unwrap_result(resp)
# Content endpoints may return either plain strings or objects.
if isinstance(result, str):
content = result
elif isinstance(result, dict):
content = result.get("content", "") or result.get("text", "")
else:
content = ""
# Truncate long content to avoid flooding context.
max_len = 8000
if level == "overview":
max_len = 4000
elif level == "abstract":
max_len = 1200
if len(content) > max_len:
content = content[:max_len] + "\n\n[... truncated, use a more specific URI or full level]"
payload = {
"uri": uri,
"resolved_uri": resolved_uri,
"level": level,
"content": content,
}
if used_fallback:
payload["fallback"] = "content/read"
return json.dumps(payload, ensure_ascii=False)
def _tool_browse(self, args: dict) -> str:
action = args.get("action", "list")
path = args.get("path", "viking://")
# Map action to the correct fs endpoint (all GET with uri= param)
endpoint_map = {"tree": "/api/v1/fs/tree", "list": "/api/v1/fs/ls", "stat": "/api/v1/fs/stat"}
endpoint = endpoint_map.get(action, "/api/v1/fs/ls")
resp = self._client.get(endpoint, params={"uri": path})
result = self._unwrap_result(resp)
# Format list/tree results for readability
if action in {"list", "tree"}:
raw_entries = result
if isinstance(result, dict):
raw_entries = result.get("entries") or result.get("items") or result.get("children") or []
if isinstance(raw_entries, list):
entries = []
for e in raw_entries[:50]: # cap at 50 entries
uri = e.get("uri", "")
name = e.get("rel_path") or e.get("name") or (uri.rsplit("/", 1)[-1] if uri else "")
is_dir = bool(e.get("isDir") or e.get("is_dir") or e.get("type") == "dir")
entries.append({
"name": name,
"uri": uri,
"type": "dir" if is_dir else "file",
"abstract": e.get("abstract", ""),
})
return json.dumps({"path": path, "entries": entries}, ensure_ascii=False)
return json.dumps(result, ensure_ascii=False)
def _tool_remember(self, args: dict) -> str:
content = args.get("content", "")
if not content:
return tool_error("content is required")
category = args.get("category", "")
subdir = _CATEGORY_SUBDIR_MAP.get(category, _DEFAULT_MEMORY_SUBDIR)
uri = self._build_memory_uri(subdir)
# Write directly via content/write API.
# This creates the file, stores the content, and queues vector indexing
# in a single call — no dependency on session commit / VLM extraction.
try:
result = self._client.post("/api/v1/content/write", {
"uri": uri,
"content": content,
"mode": "create",
})
written = result.get("result", {}).get("written_bytes", 0)
return json.dumps({
"status": "stored",
"message": f"Memory stored ({written}b) and queued for vector indexing.",
})
except Exception as e:
logger.error("OpenViking content/write failed: %s", e)
return tool_error(f"Failed to store memory: {e}")
def _tool_add_resource(self, args: dict) -> str:
url = args.get("url", "")
if not url:
return tool_error("url is required")
if args.get("to") and args.get("parent"):
return tool_error("Cannot specify both 'to' and 'parent'")
payload: Dict[str, Any] = {}
for key in ("reason", "to", "parent", "instruction", "wait", "timeout"):
if key in args and args[key] not in {None, ""}:
payload[key] = args[key]
parsed_url = urlparse(url)
if _is_remote_resource_source(url):
source_path = None
elif parsed_url.scheme == "file":
source_path = _path_from_file_uri(url)
if isinstance(source_path, str):
return tool_error(source_path)
elif parsed_url.scheme and not _is_windows_absolute_path(url):
source_path = None
else:
source_path = Path(url).expanduser()
cleanup_path: Optional[Path] = None
try:
if source_path is not None:
if source_path.exists():
if source_path.is_dir():
payload["source_name"] = source_path.name
cleanup_path = _zip_directory(source_path)
upload_path = cleanup_path
elif source_path.is_file():
payload["source_name"] = source_path.name
upload_path = source_path
else:
return tool_error(f"Unsupported local resource path: {url}")
payload["temp_file_id"] = self._client.upload_temp_file(upload_path)
elif _is_local_path_reference(url):
return tool_error(f"Local resource path does not exist: {url}")
else:
payload["path"] = url
else:
payload["path"] = url
resp = self._client.post("/api/v1/resources", payload)
result = resp.get("result", {})
finally:
if cleanup_path:
cleanup_path.unlink(missing_ok=True)
return json.dumps({
"status": "added",
"root_uri": result.get("root_uri", ""),
"message": "Resource queued for processing. Use viking_search after a moment to find it.",
}, ensure_ascii=False)
# ---------------------------------------------------------------------------
# Plugin entry point
# ---------------------------------------------------------------------------
def register(ctx) -> None:
"""Register OpenViking as a memory provider plugin."""
ctx.register_memory_provider(OpenVikingMemoryProvider())
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name: openviking
version: 2.0.0
description: "OpenViking context database — session-managed memory with automatic extraction, tiered retrieval, and filesystem-style knowledge browsing."
pip_dependencies:
- httpx
requires_env:
- OPENVIKING_ENDPOINT
hooks:
- on_session_end
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# RetainDB Memory Provider
Cloud memory API with hybrid search (Vector + BM25 + Reranking) and 7 memory types.
## Requirements
- RetainDB account ($20/month) from [retaindb.com](https://www.retaindb.com)
- `pip install requests`
## Setup
```bash
hermes memory setup # select "retaindb"
```
Or manually:
```bash
hermes config set memory.provider retaindb
echo "RETAINDB_API_KEY=your-key" >> ~/.hermes/.env
```
## Config
All config via environment variables in `.env`:
| Env Var | Default | Description |
|---------|---------|-------------|
| `RETAINDB_API_KEY` | (required) | API key |
| `RETAINDB_BASE_URL` | `https://api.retaindb.com` | API endpoint |
| `RETAINDB_PROJECT` | auto (profile-scoped) | Project identifier |
## Tools
| Tool | Description |
|------|-------------|
| `retaindb_profile` | User's stable profile |
| `retaindb_search` | Semantic search |
| `retaindb_context` | Task-relevant context |
| `retaindb_remember` | Store a fact with type + importance |
| `retaindb_forget` | Delete a memory by ID |
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"""RetainDB memory plugin — MemoryProvider interface.
Cross-session memory via RetainDB cloud API.
Features:
- Correct API routes for all operations
- Durable SQLite write-behind queue (crash-safe, async ingest)
- Semantic search + user profile retrieval
- Context query with deduplication overlay
- Dialectic synthesis (LLM-powered user understanding, prefetched each turn)
- Agent self-model (persona + instructions from SOUL.md, prefetched each turn)
- Shared file store tools (upload, list, read, ingest, delete)
- Explicit memory tools (profile, search, context, remember, forget)
Config (env vars or hermes config.yaml under retaindb:):
RETAINDB_API_KEY API key (required)
RETAINDB_BASE_URL API endpoint (default: https://api.retaindb.com)
RETAINDB_PROJECT Project identifier (optional defaults to "default")
"""
from __future__ import annotations
import json
import logging
import os
import queue
import re
import sqlite3
import threading
import time
from datetime import datetime, timezone
from pathlib import Path
from typing import Any, Dict, List
from urllib.parse import quote
from agent.memory_provider import MemoryProvider
from tools.registry import tool_error
logger = logging.getLogger(__name__)
_DEFAULT_BASE_URL = "https://api.retaindb.com"
_ASYNC_SHUTDOWN = object()
# ---------------------------------------------------------------------------
# Tool schemas
# ---------------------------------------------------------------------------
PROFILE_SCHEMA = {
"name": "retaindb_profile",
"description": "Get the user's stable profile — preferences, facts, and patterns recalled from long-term memory.",
"parameters": {"type": "object", "properties": {}, "required": []},
}
SEARCH_SCHEMA = {
"name": "retaindb_search",
"description": "Semantic search across stored memories. Returns ranked results with relevance scores.",
"parameters": {
"type": "object",
"properties": {
"query": {"type": "string", "description": "What to search for."},
"top_k": {"type": "integer", "description": "Max results (default: 8, max: 20)."},
},
"required": ["query"],
},
}
CONTEXT_SCHEMA = {
"name": "retaindb_context",
"description": "Synthesized context block — what matters most for the current task, pulled from long-term memory.",
"parameters": {
"type": "object",
"properties": {
"query": {"type": "string", "description": "Current task or question."},
},
"required": ["query"],
},
}
REMEMBER_SCHEMA = {
"name": "retaindb_remember",
"description": "Persist an explicit fact, preference, or decision to long-term memory.",
"parameters": {
"type": "object",
"properties": {
"content": {"type": "string", "description": "The fact to remember."},
"memory_type": {
"type": "string",
"enum": ["factual", "preference", "goal", "instruction", "event", "opinion"],
"description": "Category (default: factual).",
},
"importance": {"type": "number", "description": "Importance 0-1 (default: 0.7)."},
},
"required": ["content"],
},
}
FORGET_SCHEMA = {
"name": "retaindb_forget",
"description": "Delete a specific memory by ID.",
"parameters": {
"type": "object",
"properties": {
"memory_id": {"type": "string", "description": "Memory ID to delete."},
},
"required": ["memory_id"],
},
}
FILE_UPLOAD_SCHEMA = {
"name": "retaindb_upload_file",
"description": "Upload a file to the shared RetainDB file store. Returns an rdb:// URI any agent can reference.",
"parameters": {
"type": "object",
"properties": {
"local_path": {"type": "string", "description": "Local file path to upload."},
"remote_path": {"type": "string", "description": "Destination path, e.g. /reports/q1.pdf"},
"scope": {"type": "string", "enum": ["USER", "PROJECT", "ORG"], "description": "Access scope (default: PROJECT)."},
"ingest": {"type": "boolean", "description": "Also extract memories from file after upload (default: false)."},
},
"required": ["local_path"],
},
}
FILE_LIST_SCHEMA = {
"name": "retaindb_list_files",
"description": "List files in the shared file store.",
"parameters": {
"type": "object",
"properties": {
"prefix": {"type": "string", "description": "Path prefix to filter by, e.g. /reports/"},
"limit": {"type": "integer", "description": "Max results (default: 50)."},
},
"required": [],
},
}
FILE_READ_SCHEMA = {
"name": "retaindb_read_file",
"description": "Read the text content of a stored file by its file ID.",
"parameters": {
"type": "object",
"properties": {
"file_id": {"type": "string", "description": "File ID returned from upload or list."},
},
"required": ["file_id"],
},
}
FILE_INGEST_SCHEMA = {
"name": "retaindb_ingest_file",
"description": "Chunk, embed, and extract memories from a stored file. Makes its contents searchable.",
"parameters": {
"type": "object",
"properties": {
"file_id": {"type": "string", "description": "File ID to ingest."},
},
"required": ["file_id"],
},
}
FILE_DELETE_SCHEMA = {
"name": "retaindb_delete_file",
"description": "Delete a stored file.",
"parameters": {
"type": "object",
"properties": {
"file_id": {"type": "string", "description": "File ID to delete."},
},
"required": ["file_id"],
},
}
# ---------------------------------------------------------------------------
# HTTP client
# ---------------------------------------------------------------------------
class _Client:
def __init__(self, api_key: str, base_url: str, project: str):
self.api_key = api_key
self.base_url = re.sub(r"/+$", "", base_url)
self.project = project
def _headers(self, path: str) -> dict:
token = self.api_key.replace("Bearer ", "").strip()
h = {
"Authorization": f"Bearer {token}",
"Content-Type": "application/json",
"x-sdk-runtime": "hermes-plugin",
}
if path.startswith(("/v1/memory", "/v1/context")):
h["X-API-Key"] = token
return h
def request(self, method: str, path: str, *, params=None, json_body=None, timeout: float = 8.0) -> Any:
import requests
url = f"{self.base_url}{path}"
resp = requests.request(
method.upper(), url,
params=params,
json=json_body if method.upper() not in {"GET", "DELETE"} else None,
headers=self._headers(path),
timeout=timeout,
)
try:
payload = resp.json()
except Exception:
payload = resp.text
if not resp.ok:
msg = ""
if isinstance(payload, dict):
msg = str(payload.get("message") or payload.get("error") or "")
raise RuntimeError(f"RetainDB {method} {path} failed ({resp.status_code}): {msg or payload}")
return payload
# ── Memory ────────────────────────────────────────────────────────────────
def query_context(self, user_id: str, session_id: str, query: str, max_tokens: int = 1200) -> dict:
return self.request("POST", "/v1/context/query", json_body={
"project": self.project,
"query": query,
"user_id": user_id,
"session_id": session_id,
"include_memories": True,
"max_tokens": max_tokens,
})
def search(self, user_id: str, session_id: str, query: str, top_k: int = 8) -> dict:
return self.request("POST", "/v1/memory/search", json_body={
"project": self.project,
"query": query,
"user_id": user_id,
"session_id": session_id,
"top_k": top_k,
"include_pending": True,
})
def get_profile(self, user_id: str) -> dict:
try:
return self.request("GET", f"/v1/memory/profile/{quote(user_id, safe='')}", params={"project": self.project, "include_pending": "true"})
except Exception:
return self.request("GET", "/v1/memories", params={"project": self.project, "user_id": user_id, "limit": "200"})
def add_memory(self, user_id: str, session_id: str, content: str, memory_type: str = "factual", importance: float = 0.7) -> dict:
try:
return self.request("POST", "/v1/memory", json_body={
"project": self.project, "content": content, "memory_type": memory_type,
"user_id": user_id, "session_id": session_id, "importance": importance, "write_mode": "sync",
}, timeout=5.0)
except Exception:
return self.request("POST", "/v1/memories", json_body={
"project": self.project, "content": content, "memory_type": memory_type,
"user_id": user_id, "session_id": session_id, "importance": importance,
}, timeout=5.0)
def delete_memory(self, memory_id: str) -> dict:
try:
return self.request("DELETE", f"/v1/memory/{quote(memory_id, safe='')}", timeout=5.0)
except Exception:
return self.request("DELETE", f"/v1/memories/{quote(memory_id, safe='')}", timeout=5.0)
def ingest_session(self, user_id: str, session_id: str, messages: list, timeout: float = 15.0) -> dict:
return self.request("POST", "/v1/memory/ingest/session", json_body={
"project": self.project, "session_id": session_id, "user_id": user_id,
"messages": messages, "write_mode": "sync",
}, timeout=timeout)
def ask_user(self, user_id: str, query: str, reasoning_level: str = "low") -> dict:
return self.request("POST", f"/v1/memory/profile/{quote(user_id, safe='')}/ask", json_body={
"project": self.project, "query": query, "reasoning_level": reasoning_level,
}, timeout=8.0)
def get_agent_model(self, agent_id: str) -> dict:
return self.request("GET", f"/v1/memory/agent/{quote(agent_id, safe='')}/model", params={"project": self.project}, timeout=4.0)
def seed_agent_identity(self, agent_id: str, content: str, source: str = "soul_md") -> dict:
return self.request("POST", f"/v1/memory/agent/{quote(agent_id, safe='')}/seed", json_body={
"project": self.project, "content": content, "source": source,
}, timeout=20.0)
# ── Files ─────────────────────────────────────────────────────────────────
def upload_file(self, data: bytes, filename: str, remote_path: str, mime_type: str, scope: str, project_id: str | None) -> dict:
import io
import requests
url = f"{self.base_url}/v1/files"
token = self.api_key.replace("Bearer ", "").strip()
headers = {"Authorization": f"Bearer {token}", "x-sdk-runtime": "hermes-plugin"}
fields = {"path": remote_path, "scope": scope.upper()}
if project_id:
fields["project_id"] = project_id
resp = requests.post(url, files={"file": (filename, io.BytesIO(data), mime_type)}, data=fields, headers=headers, timeout=30)
resp.raise_for_status()
return resp.json()
def list_files(self, prefix: str | None = None, limit: int = 50) -> dict:
params: dict = {"limit": limit}
if prefix:
params["prefix"] = prefix
return self.request("GET", "/v1/files", params=params)
def get_file(self, file_id: str) -> dict:
return self.request("GET", f"/v1/files/{quote(file_id, safe='')}")
def read_file_content(self, file_id: str) -> bytes:
import requests
token = self.api_key.replace("Bearer ", "").strip()
url = f"{self.base_url}/v1/files/{quote(file_id, safe='')}/content"
resp = requests.get(url, headers={"Authorization": f"Bearer {token}", "x-sdk-runtime": "hermes-plugin"}, timeout=30, allow_redirects=True)
resp.raise_for_status()
return resp.content
def ingest_file(self, file_id: str, user_id: str | None = None, agent_id: str | None = None) -> dict:
body: dict = {}
if user_id:
body["user_id"] = user_id
if agent_id:
body["agent_id"] = agent_id
return self.request("POST", f"/v1/files/{quote(file_id, safe='')}/ingest", json_body=body, timeout=60.0)
def delete_file(self, file_id: str) -> dict:
return self.request("DELETE", f"/v1/files/{quote(file_id, safe='')}", timeout=5.0)
# ---------------------------------------------------------------------------
# Durable write-behind queue
# ---------------------------------------------------------------------------
class _WriteQueue:
"""SQLite-backed async write queue. Survives crashes — pending rows replay on startup."""
def __init__(self, client: _Client, db_path: Path):
self._client = client
self._db_path = db_path
self._q: queue.Queue = queue.Queue()
self._thread = threading.Thread(target=self._loop, name="retaindb-writer", daemon=True)
self._db_path.parent.mkdir(parents=True, exist_ok=True)
# Thread-local connection cache — one connection per thread, reused.
self._local = threading.local()
self._init_db()
self._thread.start()
# Replay any rows left from a previous crash
for row_id, user_id, session_id, msgs_json in self._pending_rows():
self._q.put((row_id, user_id, session_id, json.loads(msgs_json)))
def _get_conn(self) -> sqlite3.Connection:
"""Return a cached connection for the current thread."""
conn = getattr(self._local, "conn", None)
if conn is None:
conn = sqlite3.connect(str(self._db_path), timeout=30)
conn.row_factory = sqlite3.Row
self._local.conn = conn
return conn
def _init_db(self) -> None:
conn = self._get_conn()
conn.execute("""CREATE TABLE IF NOT EXISTS pending (
id INTEGER PRIMARY KEY AUTOINCREMENT,
user_id TEXT, session_id TEXT, messages_json TEXT,
created_at TEXT, last_error TEXT
)""")
conn.commit()
def _pending_rows(self) -> list:
conn = self._get_conn()
return conn.execute("SELECT id, user_id, session_id, messages_json FROM pending ORDER BY id ASC LIMIT 200").fetchall()
def enqueue(self, user_id: str, session_id: str, messages: list) -> None:
now = datetime.now(timezone.utc).isoformat()
conn = self._get_conn()
cur = conn.execute(
"INSERT INTO pending (user_id, session_id, messages_json, created_at) VALUES (?,?,?,?)",
(user_id, session_id, json.dumps(messages, ensure_ascii=False), now),
)
row_id = cur.lastrowid
conn.commit()
self._q.put((row_id, user_id, session_id, messages))
def _flush_row(self, row_id: int, user_id: str, session_id: str, messages: list) -> None:
try:
self._client.ingest_session(user_id, session_id, messages)
conn = self._get_conn()
conn.execute("DELETE FROM pending WHERE id = ?", (row_id,))
conn.commit()
except Exception as exc:
logger.warning("RetainDB ingest failed (will retry): %s", exc)
conn = self._get_conn()
conn.execute("UPDATE pending SET last_error = ? WHERE id = ?", (str(exc), row_id))
conn.commit()
time.sleep(2)
def _loop(self) -> None:
while True:
try:
item = self._q.get(timeout=5)
if item is _ASYNC_SHUTDOWN:
break
self._flush_row(*item)
except queue.Empty:
continue
except Exception as exc:
logger.error("RetainDB writer error: %s", exc)
def shutdown(self) -> None:
self._q.put(_ASYNC_SHUTDOWN)
self._thread.join(timeout=10)
# ---------------------------------------------------------------------------
# Overlay formatter
# ---------------------------------------------------------------------------
def _build_overlay(profile: dict, query_result: dict, local_entries: list[str] | None = None) -> str:
def _compact(s: str) -> str:
return re.sub(r"\s+", " ", str(s or "")).strip()[:320]
def _norm(s: str) -> str:
return re.sub(r"[^a-z0-9 ]", "", _compact(s).lower())
seen: list[str] = [_norm(e) for e in (local_entries or []) if _norm(e)]
profile_items: list[str] = []
for m in list((profile or {}).get("memories") or [])[:5]:
c = _compact((m or {}).get("content") or "")
n = _norm(c)
if c and n not in seen:
seen.append(n)
profile_items.append(c)
query_items: list[str] = []
for r in list((query_result or {}).get("results") or [])[:5]:
c = _compact((r or {}).get("content") or "")
n = _norm(c)
if c and n not in seen:
seen.append(n)
query_items.append(c)
if not profile_items and not query_items:
return ""
lines = ["[RetainDB Context]", "Profile:"]
lines += [f"- {i}" for i in profile_items] or ["- None"]
lines.append("Relevant memories:")
lines += [f"- {i}" for i in query_items] or ["- None"]
return "\n".join(lines)
# ---------------------------------------------------------------------------
# Main plugin class
# ---------------------------------------------------------------------------
class RetainDBMemoryProvider(MemoryProvider):
"""RetainDB cloud memory — durable queue, semantic search, dialectic synthesis, shared files."""
def __init__(self):
self._client: _Client | None = None
self._queue: _WriteQueue | None = None
self._user_id = "default"
self._session_id = ""
self._agent_id = "hermes"
self._lock = threading.Lock()
# Prefetch caches
self._context_result = ""
self._dialectic_result = ""
self._agent_model: dict = {}
# Prefetch thread tracking — prevents accumulation on rapid calls
self._prefetch_threads: list[threading.Thread] = []
# ── Core identity ──────────────────────────────────────────────────────
@property
def name(self) -> str:
return "retaindb"
def is_available(self) -> bool:
return bool(os.environ.get("RETAINDB_API_KEY"))
def get_config_schema(self) -> List[Dict[str, Any]]:
return [
{"key": "api_key", "description": "RetainDB API key", "secret": True, "required": True, "env_var": "RETAINDB_API_KEY", "url": "https://retaindb.com"},
{"key": "base_url", "description": "API endpoint", "default": _DEFAULT_BASE_URL},
{"key": "project", "description": "Project identifier (optional — uses 'default' project if not set)", "default": ""},
]
# ── Lifecycle ──────────────────────────────────────────────────────────
def initialize(self, session_id: str, **kwargs) -> None:
api_key = os.environ.get("RETAINDB_API_KEY", "")
base_url = re.sub(r"/+$", "", os.environ.get("RETAINDB_BASE_URL", _DEFAULT_BASE_URL))
# Project resolution: RETAINDB_PROJECT > hermes-<profile> > "default"
# If unset, the API auto-creates and uses the "default" project — no config required.
explicit = os.environ.get("RETAINDB_PROJECT")
if explicit:
project = explicit
else:
hermes_home = str(kwargs.get("hermes_home", ""))
profile_name = os.path.basename(hermes_home) if hermes_home else ""
project = f"hermes-{profile_name}" if (profile_name and profile_name not in {"", ".hermes"}) else "default"
self._client = _Client(api_key, base_url, project)
self._session_id = session_id
self._user_id = kwargs.get("user_id", "default") or "default"
self._agent_id = kwargs.get("agent_id", "hermes") or "hermes"
from hermes_constants import get_hermes_home
hermes_home_path = get_hermes_home()
db_path = hermes_home_path / "retaindb_queue.db"
self._queue = _WriteQueue(self._client, db_path)
# Seed agent identity from SOUL.md in background
soul_path = hermes_home_path / "SOUL.md"
if soul_path.exists():
soul_content = soul_path.read_text(encoding="utf-8", errors="replace").strip()
if soul_content:
threading.Thread(
target=self._seed_soul,
args=(soul_content,),
name="retaindb-soul-seed",
daemon=True,
).start()
def _seed_soul(self, content: str) -> None:
try:
self._client.seed_agent_identity(self._agent_id, content, source="soul_md")
except Exception as exc:
logger.debug("RetainDB soul seed failed: %s", exc)
def system_prompt_block(self) -> str:
project = self._client.project if self._client else "retaindb"
return (
"# RetainDB Memory\n"
f"Active. Project: {project}.\n"
"Use retaindb_search to find memories, retaindb_remember to store facts, "
"retaindb_profile for a user overview, retaindb_context for current-task context."
)
# ── Background prefetch (fires at turn-end, consumed next turn-start) ──
def queue_prefetch(self, query: str, *, session_id: str = "") -> None:
"""Fire context + dialectic + agent model prefetches in background."""
if not self._client:
return
# Wait for any still-running prefetch threads before spawning new ones.
# Prevents thread accumulation if turns fire faster than prefetches complete.
for t in self._prefetch_threads:
t.join(timeout=2.0)
threads = [
threading.Thread(target=self._prefetch_context, args=(query,), name="retaindb-ctx", daemon=True),
threading.Thread(target=self._prefetch_dialectic, args=(query,), name="retaindb-dialectic", daemon=True),
threading.Thread(target=self._prefetch_agent_model, name="retaindb-agent-model", daemon=True),
]
self._prefetch_threads = threads
for t in threads:
t.start()
def _prefetch_context(self, query: str) -> None:
try:
query_result = self._client.query_context(self._user_id, self._session_id, query)
profile = self._client.get_profile(self._user_id)
overlay = _build_overlay(profile, query_result)
with self._lock:
self._context_result = overlay
except Exception as exc:
logger.debug("RetainDB context prefetch failed: %s", exc)
def _prefetch_dialectic(self, query: str) -> None:
try:
result = self._client.ask_user(self._user_id, query, reasoning_level=self._reasoning_level(query))
answer = str(result.get("answer") or "")
if answer:
with self._lock:
self._dialectic_result = answer
except Exception as exc:
logger.debug("RetainDB dialectic prefetch failed: %s", exc)
def _prefetch_agent_model(self) -> None:
try:
model = self._client.get_agent_model(self._agent_id)
if model.get("memory_count", 0) > 0:
with self._lock:
self._agent_model = model
except Exception as exc:
logger.debug("RetainDB agent model prefetch failed: %s", exc)
@staticmethod
def _reasoning_level(query: str) -> str:
n = len(query)
if n < 120:
return "low"
if n < 400:
return "medium"
return "high"
def prefetch(self, query: str, *, session_id: str = "") -> str:
"""Consume prefetched results and return them as a context block."""
with self._lock:
context = self._context_result
dialectic = self._dialectic_result
agent_model = self._agent_model
self._context_result = ""
self._dialectic_result = ""
self._agent_model = {}
parts: list[str] = []
if context:
parts.append(context)
if dialectic:
parts.append(f"[RetainDB User Synthesis]\n{dialectic}")
if agent_model and agent_model.get("memory_count", 0) > 0:
model_lines: list[str] = []
if agent_model.get("persona"):
model_lines.append(f"Persona: {agent_model['persona']}")
if agent_model.get("persistent_instructions"):
model_lines.append("Instructions:\n" + "\n".join(f"- {i}" for i in agent_model["persistent_instructions"]))
if agent_model.get("working_style"):
model_lines.append(f"Working style: {agent_model['working_style']}")
if model_lines:
parts.append("[RetainDB Agent Self-Model]\n" + "\n".join(model_lines))
return "\n\n".join(parts)
# ── Turn sync ──────────────────────────────────────────────────────────
def sync_turn(self, user_content: str, assistant_content: str, *, session_id: str = "") -> None:
"""Queue turn for async ingest. Returns immediately."""
if not self._queue or not user_content:
return
now = datetime.now(timezone.utc).isoformat()
self._queue.enqueue(
self._user_id,
session_id or self._session_id,
[
{"role": "user", "content": user_content, "timestamp": now},
{"role": "assistant", "content": assistant_content, "timestamp": now},
],
)
# ── Tools ──────────────────────────────────────────────────────────────
def get_tool_schemas(self) -> List[Dict[str, Any]]:
return [
PROFILE_SCHEMA, SEARCH_SCHEMA, CONTEXT_SCHEMA,
REMEMBER_SCHEMA, FORGET_SCHEMA,
FILE_UPLOAD_SCHEMA, FILE_LIST_SCHEMA, FILE_READ_SCHEMA,
FILE_INGEST_SCHEMA, FILE_DELETE_SCHEMA,
]
def handle_tool_call(self, tool_name: str, args: dict, **kwargs) -> str:
if not self._client:
return tool_error("RetainDB not initialized")
try:
return json.dumps(self._dispatch(tool_name, args))
except Exception as exc:
return tool_error(str(exc))
def _dispatch(self, tool_name: str, args: dict) -> Any:
c = self._client
if tool_name == "retaindb_profile":
return c.get_profile(self._user_id)
if tool_name == "retaindb_search":
query = args.get("query", "")
if not query:
return {"error": "query is required"}
return c.search(self._user_id, self._session_id, query, top_k=min(int(args.get("top_k", 8)), 20))
if tool_name == "retaindb_context":
query = args.get("query", "")
if not query:
return {"error": "query is required"}
query_result = c.query_context(self._user_id, self._session_id, query)
profile = c.get_profile(self._user_id)
overlay = _build_overlay(profile, query_result)
return {"context": overlay, "raw": query_result}
if tool_name == "retaindb_remember":
content = args.get("content", "")
if not content:
return {"error": "content is required"}
return c.add_memory(
self._user_id, self._session_id, content,
memory_type=args.get("memory_type", "factual"),
importance=float(args.get("importance", 0.7)),
)
if tool_name == "retaindb_forget":
memory_id = args.get("memory_id", "")
if not memory_id:
return {"error": "memory_id is required"}
return c.delete_memory(memory_id)
# ── File tools ──────────────────────────────────────────────────────
if tool_name == "retaindb_upload_file":
local_path = args.get("local_path", "")
if not local_path:
return {"error": "local_path is required"}
path_obj = Path(local_path)
if not path_obj.exists():
return {"error": f"File not found: {local_path}"}
data = path_obj.read_bytes()
import mimetypes
mime = mimetypes.guess_type(path_obj.name)[0] or "application/octet-stream"
remote_path = args.get("remote_path") or f"/{path_obj.name}"
result = c.upload_file(data, path_obj.name, remote_path, mime, args.get("scope", "PROJECT"), None)
if args.get("ingest") and result.get("file", {}).get("id"):
ingest = c.ingest_file(result["file"]["id"], user_id=self._user_id, agent_id=self._agent_id)
result["ingest"] = ingest
return result
if tool_name == "retaindb_list_files":
return c.list_files(prefix=args.get("prefix"), limit=int(args.get("limit", 50)))
if tool_name == "retaindb_read_file":
file_id = args.get("file_id", "")
if not file_id:
return {"error": "file_id is required"}
meta = c.get_file(file_id)
file_info = meta.get("file") or {}
mime = (file_info.get("mime_type") or "").lower()
raw = c.read_file_content(file_id)
if not (mime.startswith("text/") or any(file_info.get("name", "").endswith(e) for e in (".txt", ".md", ".json", ".csv", ".yaml", ".yml", ".xml", ".html"))):
return {"file_id": file_id, "rdb_uri": file_info.get("rdb_uri"), "name": file_info.get("name"), "content": None, "note": "Binary file — use retaindb_ingest_file to extract text into memory."}
text = raw.decode("utf-8", errors="replace")
return {"file_id": file_id, "rdb_uri": file_info.get("rdb_uri"), "name": file_info.get("name"), "content": text[:32000], "truncated": len(text) > 32000}
if tool_name == "retaindb_ingest_file":
file_id = args.get("file_id", "")
if not file_id:
return {"error": "file_id is required"}
return c.ingest_file(file_id, user_id=self._user_id, agent_id=self._agent_id)
if tool_name == "retaindb_delete_file":
file_id = args.get("file_id", "")
if not file_id:
return {"error": "file_id is required"}
return c.delete_file(file_id)
return {"error": f"Unknown tool: {tool_name}"}
# ── Optional hooks ─────────────────────────────────────────────────────
def on_memory_write(self, action: str, target: str, content: str) -> None:
"""Mirror built-in memory writes to RetainDB."""
if action != "add" or not content or not self._client:
return
try:
memory_type = "preference" if target == "user" else "factual"
self._client.add_memory(self._user_id, self._session_id, content, memory_type=memory_type)
except Exception as exc:
logger.debug("RetainDB memory mirror failed: %s", exc)
def shutdown(self) -> None:
for t in self._prefetch_threads:
t.join(timeout=3.0)
if self._queue:
self._queue.shutdown()
def register(ctx) -> None:
"""Register RetainDB as a memory provider plugin."""
ctx.register_memory_provider(RetainDBMemoryProvider())
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name: retaindb
version: 1.0.0
description: "RetainDB — cloud memory API with hybrid search and 7 memory types."
pip_dependencies:
- requests
requires_env:
- RETAINDB_API_KEY
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# Supermemory Memory Provider
Semantic long-term memory with profile recall, semantic search, explicit memory tools, and full-session conversation ingest (one ingest per session) for richer profiles.
## Requirements
- `pip install supermemory`
- Supermemory API key from [supermemory.ai](https://supermemory.ai)
## Setup
```bash
hermes memory setup # select "supermemory"
```
Or manually:
```bash
hermes config set memory.provider supermemory
echo 'SUPERMEMORY_API_KEY=***' >> ~/.hermes/.env
```
## Config
Config file: `$HERMES_HOME/supermemory.json`
| Key | Default | Description |
|-----|---------|-------------|
| `container_tag` | `hermes` | Container tag used for search and writes. Supports `{identity}` template for profile-scoped tags (e.g. `hermes-{identity}``hermes-coder`). |
| `auto_recall` | `true` | Inject relevant memory context before turns |
| `auto_capture` | `true` | Store cleaned user-assistant turns after each response |
| `max_recall_results` | `10` | Max recalled items to format into context |
| `profile_frequency` | `50` | Include profile facts on first turn and every N turns |
| `capture_mode` | `all` | Skip tiny or trivial turns by default |
| `search_mode` | `hybrid` | Search mode: `hybrid` (profile + memories), `memories` (memories only), `documents` (documents only) |
| `entity_context` | built-in default | Extraction guidance passed to Supermemory |
| `api_timeout` | `5.0` | Timeout for SDK and ingest requests |
### Environment Variables
| Variable | Description |
|----------|-------------|
| `SUPERMEMORY_API_KEY` | API key (required) |
| `SUPERMEMORY_CONTAINER_TAG` | Override container tag (takes priority over config file) |
## Tools
Kebab-case names are registered for the agent; snake_case aliases remain supported.
| Tool | Alias | Description |
|------|-------|-------------|
| `supermemory-save` | `supermemory_store` | Store an explicit memory |
| `supermemory-search` | `supermemory_search` | Search memories by semantic similarity |
| `supermemory-forget` | `supermemory_forget` | Forget a memory by ID or best-match query |
| `supermemory-profile` | `supermemory_profile` | Retrieve persistent profile and recent context |
## Source attribution
All Supermemory API calls send `x-sm-source: hermes`, and document writes stamp
`metadata.sm_source: hermes`. This is a **functional routing key, not telemetry**:
it groups Hermes-written memories into a dedicated "Hermes" Space in the
Supermemory app, so you can filter, browse, and bulk-manage them per source agent
(alongside Codex, Claude Code, etc.) from the Supermemory UI.
## Behavior
When enabled, Hermes can:
- prefetch relevant memory context before each turn
- buffer the full conversation and ingest it as **one session** at session end (or on `/reset`, branch, compression, or shutdown)
- ingest the full session to the conversations endpoint for richer profile/graph updates
- expose explicit tools for search, store, forget, and profile access
The session is written once via the conversations endpoint, which drives Supermemory's entity extraction and profile building while keeping a clean, retrievable full transcript.
## Profile-Scoped Containers
Use `{identity}` in the `container_tag` to scope memories per Hermes profile:
```json
{
"container_tag": "hermes-{identity}"
}
```
For a profile named `coder`, this resolves to `hermes-coder`. The default profile resolves to `hermes-default`. Without `{identity}`, all profiles share the same container.
## Multi-Container Mode
For advanced setups (e.g. OpenClaw-style multi-workspace), you can enable custom container tags so the agent can read/write across multiple named containers:
```json
{
"container_tag": "hermes",
"enable_custom_container_tags": true,
"custom_containers": ["project-alpha", "project-beta", "shared-knowledge"],
"custom_container_instructions": "Use project-alpha for coding tasks, project-beta for research, and shared-knowledge for team-wide facts."
}
```
When enabled:
- `supermemory-search`, `supermemory-save`, `supermemory-forget`, and `supermemory-profile` accept an optional `container_tag` parameter
- The tag must be in the whitelist: primary container + `custom_containers`
- Automatic operations (turn sync, prefetch, memory write mirroring, session ingest) always use the **primary** container only
- Custom container instructions are injected into the system prompt
## Support
- [Supermemory Discord](https://supermemory.link/discord)
- [support@supermemory.com](mailto:support@supermemory.com)
- [supermemory.ai](https://supermemory.ai)
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"""Supermemory memory plugin using the MemoryProvider interface.
Provides semantic long-term memory with profile recall, semantic search,
explicit memory tools, cleaned turn capture, and session-end conversation ingest.
"""
from __future__ import annotations
import json
import logging
import os
import re
import threading
import urllib.error
import urllib.request
from datetime import datetime, timezone
from pathlib import Path
from typing import Any, Dict, List, Optional
from agent.memory_provider import MemoryProvider
from tools.registry import tool_error
logger = logging.getLogger(__name__)
_DEFAULT_CONTAINER_TAG = "hermes"
_DEFAULT_MAX_RECALL_RESULTS = 10
_DEFAULT_PROFILE_FREQUENCY = 50
_DEFAULT_CAPTURE_MODE = "all"
_DEFAULT_SEARCH_MODE = "hybrid"
_VALID_SEARCH_MODES = ("hybrid", "memories", "documents")
_DEFAULT_API_TIMEOUT = 5.0
_MIN_CAPTURE_LENGTH = 10
_MAX_ENTITY_CONTEXT_LENGTH = 1500
_CONVERSATIONS_URL = "https://api.supermemory.ai/v4/conversations"
_TRIVIAL_RE = re.compile(
r"^(ok|okay|thanks|thank you|got it|sure|yes|no|yep|nope|k|ty|thx|np)\.?$",
re.IGNORECASE,
)
_CONTEXT_STRIP_RE = re.compile(
r"<supermemory-context>[\s\S]*?</supermemory-context>\s*", re.DOTALL
)
_CONTAINERS_STRIP_RE = re.compile(
r"<supermemory-containers>[\s\S]*?</supermemory-containers>\s*", re.DOTALL
)
_DEFAULT_ENTITY_CONTEXT = (
"User-assistant conversation. Format: [role: user]...[user:end] and "
"[role: assistant]...[assistant:end].\n\n"
"Only extract things useful in future conversations. Most messages are not worth remembering.\n\n"
"Remember lasting personal facts, preferences, routines, tools, ongoing projects, working context, "
"and explicit requests to remember something.\n\n"
"Do not remember temporary intents, one-time tasks, assistant actions, implementation details, or in-progress status.\n\n"
"When in doubt, store less."
)
def _default_config() -> dict:
return {
"container_tag": _DEFAULT_CONTAINER_TAG,
"auto_recall": True,
"auto_capture": True,
"max_recall_results": _DEFAULT_MAX_RECALL_RESULTS,
"profile_frequency": _DEFAULT_PROFILE_FREQUENCY,
"capture_mode": _DEFAULT_CAPTURE_MODE,
"search_mode": _DEFAULT_SEARCH_MODE,
"entity_context": _DEFAULT_ENTITY_CONTEXT,
"api_timeout": _DEFAULT_API_TIMEOUT,
"enable_custom_container_tags": False,
"custom_containers": [],
"custom_container_instructions": "",
}
def _sanitize_tag(raw: str) -> str:
tag = re.sub(r"[^a-zA-Z0-9_]", "_", raw or "")
tag = re.sub(r"_+", "_", tag)
return tag.strip("_") or _DEFAULT_CONTAINER_TAG
def _clamp_entity_context(text: str) -> str:
if not text:
return _DEFAULT_ENTITY_CONTEXT
text = text.strip()
return text[:_MAX_ENTITY_CONTEXT_LENGTH]
def _as_bool(value: Any, default: bool) -> bool:
if isinstance(value, bool):
return value
if isinstance(value, str):
lowered = value.strip().lower()
if lowered in {"true", "1", "yes", "y", "on"}:
return True
if lowered in {"false", "0", "no", "n", "off"}:
return False
return default
def _load_supermemory_config(hermes_home: str) -> dict:
config = _default_config()
config_path = Path(hermes_home) / "supermemory.json"
if config_path.exists():
try:
raw = json.loads(config_path.read_text(encoding="utf-8"))
if isinstance(raw, dict):
config.update({k: v for k, v in raw.items() if v is not None})
except Exception:
logger.debug("Failed to parse %s", config_path, exc_info=True)
# Keep raw container_tag — template variables like {identity} are resolved
# in initialize(), and _sanitize_tag runs AFTER resolution.
raw_tag = str(config.get("container_tag", _DEFAULT_CONTAINER_TAG)).strip()
config["container_tag"] = raw_tag if raw_tag else _DEFAULT_CONTAINER_TAG
config["auto_recall"] = _as_bool(config.get("auto_recall"), True)
config["auto_capture"] = _as_bool(config.get("auto_capture"), True)
try:
config["max_recall_results"] = max(1, min(20, int(config.get("max_recall_results", _DEFAULT_MAX_RECALL_RESULTS))))
except Exception:
config["max_recall_results"] = _DEFAULT_MAX_RECALL_RESULTS
try:
config["profile_frequency"] = max(1, min(500, int(config.get("profile_frequency", _DEFAULT_PROFILE_FREQUENCY))))
except Exception:
config["profile_frequency"] = _DEFAULT_PROFILE_FREQUENCY
config["capture_mode"] = "everything" if config.get("capture_mode") == "everything" else "all"
raw_search_mode = str(config.get("search_mode", _DEFAULT_SEARCH_MODE)).strip().lower()
config["search_mode"] = raw_search_mode if raw_search_mode in _VALID_SEARCH_MODES else _DEFAULT_SEARCH_MODE
config["entity_context"] = _clamp_entity_context(str(config.get("entity_context", _DEFAULT_ENTITY_CONTEXT)))
try:
config["api_timeout"] = max(0.5, min(15.0, float(config.get("api_timeout", _DEFAULT_API_TIMEOUT))))
except Exception:
config["api_timeout"] = _DEFAULT_API_TIMEOUT
# Multi-container support
config["enable_custom_container_tags"] = _as_bool(config.get("enable_custom_container_tags"), False)
raw_containers = config.get("custom_containers", [])
if isinstance(raw_containers, list):
config["custom_containers"] = [_sanitize_tag(str(t)) for t in raw_containers if t]
else:
config["custom_containers"] = []
config["custom_container_instructions"] = str(config.get("custom_container_instructions", "")).strip()
return config
def _save_supermemory_config(values: dict, hermes_home: str) -> None:
config_path = Path(hermes_home) / "supermemory.json"
existing = {}
if config_path.exists():
try:
raw = json.loads(config_path.read_text(encoding="utf-8"))
if isinstance(raw, dict):
existing = raw
except Exception:
existing = {}
existing.update(values)
from utils import atomic_json_write
atomic_json_write(config_path, existing, mode=0o600, sort_keys=True)
def _detect_category(text: str) -> str:
lowered = text.lower()
if re.search(r"prefer|like|love|hate|want", lowered):
return "preference"
if re.search(r"decided|will use|going with", lowered):
return "decision"
if re.search(r"\bis\b|\bare\b|\bhas\b|\bhave\b", lowered):
return "fact"
return "other"
def _format_relative_time(iso_timestamp: str) -> str:
try:
dt = datetime.fromisoformat(iso_timestamp.replace("Z", "+00:00"))
now = datetime.now(timezone.utc)
seconds = (now - dt).total_seconds()
if seconds < 1800:
return "just now"
if seconds < 3600:
return f"{int(seconds / 60)}m ago"
if seconds < 86400:
return f"{int(seconds / 3600)}h ago"
if seconds < 604800:
return f"{int(seconds / 86400)}d ago"
if dt.year == now.year:
return dt.strftime("%d %b")
return dt.strftime("%d %b %Y")
except Exception:
return ""
def _deduplicate_recall(static_facts: list, dynamic_facts: list, search_results: list) -> tuple[list, list, list]:
seen = set()
out_static, out_dynamic, out_search = [], [], []
for fact in static_facts or []:
if fact and fact not in seen:
seen.add(fact)
out_static.append(fact)
for fact in dynamic_facts or []:
if fact and fact not in seen:
seen.add(fact)
out_dynamic.append(fact)
for item in search_results or []:
memory = item.get("memory", "")
if memory and memory not in seen:
seen.add(memory)
out_search.append(item)
return out_static, out_dynamic, out_search
def _format_prefetch_context(static_facts: list, dynamic_facts: list, search_results: list, max_results: int) -> str:
statics, dynamics, search = _deduplicate_recall(static_facts, dynamic_facts, search_results)
statics = statics[:max_results]
dynamics = dynamics[:max_results]
search = search[:max_results]
if not statics and not dynamics and not search:
return ""
sections = []
if statics:
sections.append("## User Profile (Persistent)\n" + "\n".join(f"- {item}" for item in statics))
if dynamics:
sections.append("## Recent Context\n" + "\n".join(f"- {item}" for item in dynamics))
if search:
lines = []
for item in search:
memory = item.get("memory", "")
if not memory:
continue
similarity = item.get("similarity")
updated = item.get("updated_at") or item.get("updatedAt") or ""
prefix_bits = []
rel = _format_relative_time(updated)
if rel:
prefix_bits.append(f"[{rel}]")
if similarity is not None:
try:
prefix_bits.append(f"[{round(float(similarity) * 100)}%]")
except Exception:
pass
prefix = " ".join(prefix_bits)
lines.append(f"- {prefix} {memory}".strip())
if lines:
sections.append("## Relevant Memories\n" + "\n".join(lines))
if not sections:
return ""
intro = (
"The following is background context from long-term memory. Use it silently when relevant. "
"Do not force memories into the conversation."
)
body = "\n\n".join(sections)
return f"<supermemory-context>\n{intro}\n\n{body}\n</supermemory-context>"
def _clean_text_for_capture(text: str) -> str:
text = _CONTEXT_STRIP_RE.sub("", text or "")
text = _CONTAINERS_STRIP_RE.sub("", text)
return text.strip()
def _is_trivial_message(text: str) -> bool:
return bool(_TRIVIAL_RE.match((text or "").strip()))
class _SupermemoryClient:
def __init__(self, api_key: str, timeout: float, container_tag: str, search_mode: str = "hybrid"):
from supermemory import Supermemory
self._api_key = api_key
self._container_tag = container_tag
self._search_mode = search_mode if search_mode in _VALID_SEARCH_MODES else _DEFAULT_SEARCH_MODE
self._timeout = timeout
self._client = Supermemory(
api_key=api_key,
timeout=timeout,
max_retries=0,
default_headers={"x-sm-source": "hermes"},
)
def _merge_metadata(self, metadata: Optional[dict]) -> dict:
# sm_source routes Hermes writes into the "Hermes" Space in the Supermemory
# app so the user can filter / bulk-manage them per source agent. This is a
# functional routing key for the user, not vendor telemetry.
merged = {"sm_source": "hermes", **(metadata or {})}
legacy_source = merged.pop("source", None)
if legacy_source and "type" not in merged:
merged["type"] = str(legacy_source)
return merged
def add_memory(self, content: str, metadata: Optional[dict] = None, *,
entity_context: str = "", container_tag: Optional[str] = None,
custom_id: Optional[str] = None) -> dict:
tag = container_tag or self._container_tag
kwargs: dict[str, Any] = {
"content": content.strip(),
"container_tags": [tag],
}
if metadata:
kwargs["metadata"] = self._merge_metadata(metadata)
if entity_context:
kwargs["entity_context"] = _clamp_entity_context(entity_context)
if custom_id:
kwargs["custom_id"] = custom_id
result = self._client.documents.add(**kwargs)
return {"id": getattr(result, "id", "")}
def search_memories(self, query: str, *, limit: int = 5,
container_tag: Optional[str] = None,
search_mode: Optional[str] = None) -> list[dict]:
tag = container_tag or self._container_tag
mode = search_mode or self._search_mode
kwargs: dict[str, Any] = {"q": query, "container_tag": tag, "limit": limit}
if mode in _VALID_SEARCH_MODES:
kwargs["search_mode"] = mode
response = self._client.search.memories(**kwargs)
results = []
for item in (getattr(response, "results", None) or []):
results.append({
"id": getattr(item, "id", ""),
"memory": getattr(item, "memory", "") or "",
"similarity": getattr(item, "similarity", None),
"updated_at": getattr(item, "updated_at", None) or getattr(item, "updatedAt", None),
"metadata": getattr(item, "metadata", None),
})
return results
def get_profile(self, query: Optional[str] = None, *,
container_tag: Optional[str] = None) -> dict:
tag = container_tag or self._container_tag
kwargs: dict[str, Any] = {"container_tag": tag}
if query:
kwargs["q"] = query
response = self._client.profile(**kwargs)
profile_data = getattr(response, "profile", None)
search_data = getattr(response, "search_results", None) or getattr(response, "searchResults", None)
static = getattr(profile_data, "static", []) or [] if profile_data else []
dynamic = getattr(profile_data, "dynamic", []) or [] if profile_data else []
raw_results = getattr(search_data, "results", None) or search_data or []
search_results = []
if isinstance(raw_results, list):
for item in raw_results:
if isinstance(item, dict):
search_results.append(item)
else:
search_results.append({
"memory": getattr(item, "memory", ""),
"updated_at": getattr(item, "updated_at", None) or getattr(item, "updatedAt", None),
"similarity": getattr(item, "similarity", None),
})
return {"static": static, "dynamic": dynamic, "search_results": search_results}
def forget_memory(self, memory_id: str, *, container_tag: Optional[str] = None) -> None:
tag = container_tag or self._container_tag
self._client.memories.forget(container_tag=tag, id=memory_id)
def forget_by_query(self, query: str, *, container_tag: Optional[str] = None) -> dict:
results = self.search_memories(query, limit=5, container_tag=container_tag)
if not results:
return {"success": False, "message": "No matching memory found to forget."}
target = results[0]
memory_id = target.get("id", "")
if not memory_id:
return {"success": False, "message": "Best matching memory has no id."}
self.forget_memory(memory_id, container_tag=container_tag)
preview = (target.get("memory") or "")[:100]
return {"success": True, "message": f'Forgot: "{preview}"', "id": memory_id}
def ingest_conversation(self, session_id: str, messages: list[dict], metadata: dict | None = None) -> None:
payload: dict = {
"conversationId": session_id,
"messages": messages,
"containerTags": [self._container_tag],
}
if metadata:
payload["metadata"] = self._merge_metadata(metadata)
req = urllib.request.Request(
_CONVERSATIONS_URL,
data=json.dumps(payload).encode("utf-8"),
headers={
"Authorization": f"Bearer {self._api_key}",
"Content-Type": "application/json",
"x-sm-source": "hermes",
},
method="POST",
)
with urllib.request.urlopen(req, timeout=self._timeout + 3):
return
STORE_SCHEMA = {
"name": "supermemory_store",
"description": "Store an explicit memory for future recall.",
"parameters": {
"type": "object",
"properties": {
"content": {"type": "string", "description": "The memory content to store."},
"metadata": {"type": "object", "description": "Optional metadata attached to the memory."},
},
"required": ["content"],
},
}
SEARCH_SCHEMA = {
"name": "supermemory_search",
"description": "Search long-term memory by semantic similarity.",
"parameters": {
"type": "object",
"properties": {
"query": {"type": "string", "description": "What to search for."},
"limit": {"type": "integer", "description": "Maximum results to return, 1 to 20."},
},
"required": ["query"],
},
}
FORGET_SCHEMA = {
"name": "supermemory_forget",
"description": "Forget a memory by exact id or by best-match query.",
"parameters": {
"type": "object",
"properties": {
"id": {"type": "string", "description": "Exact memory id to delete."},
"query": {"type": "string", "description": "Query used to find the memory to forget."},
},
},
}
PROFILE_SCHEMA = {
"name": "supermemory_profile",
"description": "Retrieve persistent profile facts and recent memory context.",
"parameters": {
"type": "object",
"properties": {
"query": {"type": "string", "description": "Optional query to focus the profile response."},
},
},
}
class SupermemoryMemoryProvider(MemoryProvider):
def __init__(self):
self._config = _default_config()
self._api_key = ""
self._client: Optional[_SupermemoryClient] = None
self._container_tag = _DEFAULT_CONTAINER_TAG
self._session_id = ""
self._turn_count = 0
self._prefetch_result = ""
self._prefetch_lock = threading.Lock()
self._prefetch_thread: Optional[threading.Thread] = None
self._sync_thread: Optional[threading.Thread] = None
self._write_thread: Optional[threading.Thread] = None
self._auto_recall = True
self._auto_capture = True
self._max_recall_results = _DEFAULT_MAX_RECALL_RESULTS
self._profile_frequency = _DEFAULT_PROFILE_FREQUENCY
self._capture_mode = _DEFAULT_CAPTURE_MODE
self._search_mode = _DEFAULT_SEARCH_MODE
self._entity_context = _DEFAULT_ENTITY_CONTEXT
self._api_timeout = _DEFAULT_API_TIMEOUT
self._hermes_home = ""
self._write_enabled = True
self._active = False
# Multi-container support
self._enable_custom_containers = False
self._custom_containers: List[str] = []
self._custom_container_instructions = ""
self._allowed_containers: List[str] = []
self._session_turns: List[Dict[str, str]] = []
@property
def name(self) -> str:
return "supermemory"
def is_available(self) -> bool:
api_key = os.environ.get("SUPERMEMORY_API_KEY", "")
if not api_key:
return False
try:
__import__("supermemory")
return True
except Exception:
return False
def get_config_schema(self):
# Only prompt for the API key during `hermes memory setup`.
# All other options are documented for $HERMES_HOME/supermemory.json
# or the SUPERMEMORY_CONTAINER_TAG env var.
return [
{"key": "api_key", "description": "Supermemory API key", "secret": True, "required": True, "env_var": "SUPERMEMORY_API_KEY", "url": "https://supermemory.ai"},
]
def save_config(self, values, hermes_home):
sanitized = dict(values or {})
if "container_tag" in sanitized:
sanitized["container_tag"] = _sanitize_tag(str(sanitized["container_tag"]))
if "entity_context" in sanitized:
sanitized["entity_context"] = _clamp_entity_context(str(sanitized["entity_context"]))
_save_supermemory_config(sanitized, hermes_home)
def initialize(self, session_id: str, **kwargs) -> None:
from hermes_constants import get_hermes_home
self._hermes_home = kwargs.get("hermes_home") or str(get_hermes_home())
self._session_id = session_id
self._turn_count = 0
self._config = _load_supermemory_config(self._hermes_home)
self._api_key = os.environ.get("SUPERMEMORY_API_KEY", "")
# Resolve container tag: env var > config > default.
# Supports {identity} template for profile-scoped containers.
env_tag = os.environ.get("SUPERMEMORY_CONTAINER_TAG", "").strip()
raw_tag = env_tag or self._config["container_tag"]
identity = kwargs.get("agent_identity", "default")
self._container_tag = _sanitize_tag(raw_tag.replace("{identity}", identity))
self._auto_recall = self._config["auto_recall"]
self._auto_capture = self._config["auto_capture"]
self._max_recall_results = self._config["max_recall_results"]
self._profile_frequency = self._config["profile_frequency"]
self._capture_mode = self._config["capture_mode"]
self._search_mode = self._config["search_mode"]
self._entity_context = self._config["entity_context"]
self._api_timeout = self._config["api_timeout"]
self._enable_custom_containers = self._config["enable_custom_container_tags"]
self._custom_containers = self._config["custom_containers"]
self._custom_container_instructions = self._config["custom_container_instructions"]
self._allowed_containers = [self._container_tag] + list(self._custom_containers)
self._session_turns = []
agent_context = kwargs.get("agent_context", "")
self._write_enabled = agent_context not in {"cron", "flush", "subagent"}
self._active = bool(self._api_key)
self._client = None
if self._active:
try:
self._client = _SupermemoryClient(
api_key=self._api_key,
timeout=self._api_timeout,
container_tag=self._container_tag,
search_mode=self._search_mode,
)
except Exception:
logger.warning("Supermemory initialization failed", exc_info=True)
self._active = False
self._client = None
def on_turn_start(self, turn_number: int, message: str, **kwargs) -> None:
self._turn_count = max(turn_number, 0)
def system_prompt_block(self) -> str:
if not self._active:
return ""
lines = [
"# Supermemory",
f"Active. Container: {self._container_tag}.",
"Use supermemory-search, supermemory-save, supermemory-forget, and supermemory-profile (aliases: supermemory_search, supermemory_store, supermemory_forget, supermemory_profile).",
]
if self._enable_custom_containers and self._custom_containers:
tags_str = ", ".join(self._allowed_containers)
lines.append(f"\nMulti-container mode enabled. Available containers: {tags_str}.")
lines.append("Pass an optional container_tag to supermemory_search, supermemory_store, supermemory_forget, and supermemory_profile to target a specific container.")
if self._custom_container_instructions:
lines.append(f"\n{self._custom_container_instructions}")
return "\n".join(lines)
def prefetch(self, query: str, *, session_id: str = "") -> str:
if not self._active or not self._auto_recall or not self._client or not query.strip():
return ""
try:
profile = self._client.get_profile(query=query[:200])
include_profile = self._turn_count <= 1 or (self._turn_count % self._profile_frequency == 0)
context = _format_prefetch_context(
static_facts=profile["static"] if include_profile else [],
dynamic_facts=profile["dynamic"] if include_profile else [],
search_results=profile["search_results"],
max_results=self._max_recall_results,
)
return context
except Exception:
logger.debug("Supermemory prefetch failed", exc_info=True)
return ""
def sync_turn(self, user_content: str, assistant_content: str, *, session_id: str = "") -> None:
if not self._active or not self._auto_capture or not self._write_enabled or not self._client:
return
clean_user = _clean_text_for_capture(user_content)
clean_assistant = _clean_text_for_capture(assistant_content)
if not clean_user and not clean_assistant:
return
# Buffer every turn for the single full-session document written at end/switch/shutdown
self._session_turns.append({"user": clean_user, "assistant": clean_assistant})
def on_session_end(self, messages: List[Dict[str, Any]]) -> None:
if not self._active or not self._write_enabled or not self._client or not self._session_id:
return
cleaned = []
for message in messages or []:
role = message.get("role")
if role not in {"user", "assistant"}:
continue
content = _clean_text_for_capture(str(message.get("content", "")))
if content:
cleaned.append({"role": role, "content": content})
if not cleaned:
return
if len(cleaned) == 1 and len(cleaned[0].get("content", "")) < 20:
return
try:
self._client.ingest_conversation(
self._session_id,
cleaned,
metadata={
"type": "full_session",
"session_id": self._session_id,
"message_count": len(cleaned),
},
)
except urllib.error.HTTPError:
logger.warning("Supermemory session ingest failed", exc_info=True)
except Exception:
logger.warning("Supermemory session ingest failed", exc_info=True)
# Clear buffer so shutdown() doesn't duplicate on normal exit
self._session_turns = []
def on_session_switch(
self,
new_session_id: str,
*,
parent_session_id: str = "",
reset: bool = False,
**kwargs,
) -> None:
"""Flush any buffered turns from the old session as one document, then reset for the new session."""
if not self._active or not self._write_enabled or not self._client:
self._session_id = str(new_session_id or "").strip() or self._session_id
self._session_turns = []
return
old_session_id = self._session_id
old_turns = list(self._session_turns)
# Flush previous session via conversations ingest (with metadata)
if old_turns and old_session_id:
messages: list[dict] = []
for turn in old_turns:
if turn.get("user"):
messages.append({"role": "user", "content": turn["user"]})
if turn.get("assistant"):
messages.append({"role": "assistant", "content": turn["assistant"]})
try:
self._client.ingest_conversation(
old_session_id,
messages,
metadata={
"type": "full_session",
"session_id": old_session_id,
"message_count": len(old_turns) * 2,
"partial": not reset,
},
)
except Exception:
logger.debug("Supermemory session-switch ingest failed", exc_info=True)
# Reset for new session
self._session_id = str(new_session_id or "").strip() or old_session_id
self._session_turns = []
self._turn_count = 0
def on_memory_write(self, action: str, target: str, content: str) -> None:
if not self._active or not self._write_enabled or not self._client:
return
if action != "add" or not (content or "").strip():
return
def _run():
try:
self._client.add_memory(
content.strip(),
metadata={"target": target, "type": "explicit_memory"},
entity_context=self._entity_context,
)
except Exception:
logger.debug("Supermemory on_memory_write failed", exc_info=True)
if self._write_thread and self._write_thread.is_alive():
self._write_thread.join(timeout=2.0)
self._write_thread = None
self._write_thread = threading.Thread(target=_run, daemon=False, name="supermemory-memory-write")
self._write_thread.start()
def shutdown(self) -> None:
# Emergency fallback (crashes only). Buffer is cleared on normal on_session_end().
if self._active and self._write_enabled and self._client and self._session_turns and self._session_id:
logger.warning("Supermemory: Saving session via shutdown (session=%s, turns=%d)", self._session_id, len(self._session_turns))
messages: list[dict] = []
for turn in self._session_turns:
if turn.get("user"):
messages.append({"role": "user", "content": turn["user"]})
if turn.get("assistant"):
messages.append({"role": "assistant", "content": turn["assistant"]})
try:
self._client.ingest_conversation(
self._session_id,
messages,
metadata={
"type": "full_session",
"session_id": self._session_id,
"message_count": len(self._session_turns) * 2,
"partial": True,
},
)
except Exception:
logger.debug("Supermemory shutdown ingest failed", exc_info=True)
for attr_name in ("_prefetch_thread", "_sync_thread", "_write_thread"):
thread = getattr(self, attr_name, None)
if thread and thread.is_alive():
thread.join(timeout=5.0)
setattr(self, attr_name, None)
def _resolve_tool_container_tag(self, args: dict) -> Optional[str]:
"""Validate and resolve container_tag from tool call args.
Returns None (use primary) if multi-container is disabled or no tag provided.
Returns the validated tag if it's in the allowed list.
Raises ValueError if the tag is not whitelisted.
"""
if not self._enable_custom_containers:
return None
tag = str(args.get("container_tag") or "").strip()
if not tag:
return None
sanitized = _sanitize_tag(tag)
if sanitized not in self._allowed_containers:
raise ValueError(
f"Container tag '{sanitized}' is not allowed. "
f"Allowed: {', '.join(self._allowed_containers)}"
)
return sanitized
def get_tool_schemas(self) -> List[Dict[str, Any]]:
def with_kebab_aliases(schemas: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
aliases = {
"supermemory_store": "supermemory-save",
"supermemory_search": "supermemory-search",
"supermemory_forget": "supermemory-forget",
"supermemory_profile": "supermemory-profile",
}
expanded = list(schemas)
for schema in schemas:
kebab = aliases.get(schema.get("name", ""))
if not kebab:
continue
copy = json.loads(json.dumps(schema))
copy["name"] = kebab
expanded.append(copy)
return expanded
if not self._enable_custom_containers:
return with_kebab_aliases([STORE_SCHEMA, SEARCH_SCHEMA, FORGET_SCHEMA, PROFILE_SCHEMA])
# When multi-container is enabled, add optional container_tag to relevant tools
container_param = {
"type": "string",
"description": f"Optional container tag. Allowed: {', '.join(self._allowed_containers)}. Defaults to primary ({self._container_tag}).",
}
schemas = []
for base in [STORE_SCHEMA, SEARCH_SCHEMA, FORGET_SCHEMA, PROFILE_SCHEMA]:
schema = json.loads(json.dumps(base)) # deep copy
schema["parameters"]["properties"]["container_tag"] = container_param
schemas.append(schema)
return with_kebab_aliases(schemas)
def _tool_store(self, args: dict) -> str:
content = str(args.get("content") or "").strip()
if not content:
return tool_error("content is required")
try:
tag = self._resolve_tool_container_tag(args)
except ValueError as exc:
return tool_error(str(exc))
metadata = args.get("metadata") or {}
if not isinstance(metadata, dict):
metadata = {}
metadata.setdefault("type", _detect_category(content))
metadata.pop("source", None)
try:
result = self._client.add_memory(content, metadata=metadata, entity_context=self._entity_context, container_tag=tag)
preview = content[:80] + ("..." if len(content) > 80 else "")
resp: dict[str, Any] = {"saved": True, "id": result.get("id", ""), "preview": preview}
if tag:
resp["container_tag"] = tag
return json.dumps(resp)
except Exception as exc:
return tool_error(f"Failed to store memory: {exc}")
def _tool_search(self, args: dict) -> str:
query = str(args.get("query") or "").strip()
if not query:
return tool_error("query is required")
try:
tag = self._resolve_tool_container_tag(args)
except ValueError as exc:
return tool_error(str(exc))
try:
limit = max(1, min(20, int(args.get("limit", 5) or 5)))
except Exception:
limit = 5
try:
results = self._client.search_memories(query, limit=limit, container_tag=tag)
formatted = []
for item in results:
entry: dict[str, Any] = {"id": item.get("id", ""), "content": item.get("memory", "")}
if item.get("similarity") is not None:
try:
entry["similarity"] = round(float(item["similarity"]) * 100)
except Exception:
pass
formatted.append(entry)
resp: dict[str, Any] = {"results": formatted, "count": len(formatted)}
if tag:
resp["container_tag"] = tag
return json.dumps(resp)
except Exception as exc:
return tool_error(f"Search failed: {exc}")
def _tool_forget(self, args: dict) -> str:
memory_id = str(args.get("id") or "").strip()
query = str(args.get("query") or "").strip()
if not memory_id and not query:
return tool_error("Provide either id or query")
try:
tag = self._resolve_tool_container_tag(args)
except ValueError as exc:
return tool_error(str(exc))
try:
if memory_id:
self._client.forget_memory(memory_id, container_tag=tag)
return json.dumps({"forgotten": True, "id": memory_id})
return json.dumps(self._client.forget_by_query(query, container_tag=tag))
except Exception as exc:
return tool_error(f"Forget failed: {exc}")
def _tool_profile(self, args: dict) -> str:
query = str(args.get("query") or "").strip() or None
try:
tag = self._resolve_tool_container_tag(args)
except ValueError as exc:
return tool_error(str(exc))
try:
profile = self._client.get_profile(query=query, container_tag=tag)
sections = []
if profile["static"]:
sections.append("## User Profile (Persistent)\n" + "\n".join(f"- {item}" for item in profile["static"]))
if profile["dynamic"]:
sections.append("## Recent Context\n" + "\n".join(f"- {item}" for item in profile["dynamic"]))
resp: dict[str, Any] = {
"profile": "\n\n".join(sections),
"static_count": len(profile["static"]),
"dynamic_count": len(profile["dynamic"]),
}
if tag:
resp["container_tag"] = tag
return json.dumps(resp)
except Exception as exc:
return tool_error(f"Profile failed: {exc}")
def handle_tool_call(self, tool_name: str, args: Dict[str, Any], **kwargs) -> str:
if not self._active or not self._client:
return tool_error("Supermemory is not configured")
aliases = {
"supermemory-save": "supermemory_store",
"supermemory-search": "supermemory_search",
"supermemory-forget": "supermemory_forget",
"supermemory-profile": "supermemory_profile",
}
tool_name = aliases.get(tool_name, tool_name)
if tool_name == "supermemory_store":
return self._tool_store(args)
if tool_name == "supermemory_search":
return self._tool_search(args)
if tool_name == "supermemory_forget":
return self._tool_forget(args)
if tool_name == "supermemory_profile":
return self._tool_profile(args)
return tool_error(f"Unknown tool: {tool_name}")
def register(ctx):
ctx.register_memory_provider(SupermemoryMemoryProvider())
+5
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@@ -0,0 +1,5 @@
name: supermemory
version: 1.0.1
description: "Supermemory semantic long-term memory with profile recall, semantic search, explicit memory tools, and session ingest."
pip_dependencies:
- supermemory