forked from Zakaria/hermes-agent
Zakaria
54 lines
1.3 KiB
Markdown
54 lines
1.3 KiB
Markdown
# Langfuse Observability Plugin
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This plugin ships bundled with Hermes but is **opt-in** — it only loads when
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you explicitly enable it.
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## Enable
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Pick one:
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```bash
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# Interactive: walks you through credentials + SDK install + enable
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hermes tools # → Langfuse Observability
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# Manual
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pip install langfuse
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hermes plugins enable observability/langfuse
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```
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## Required credentials
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Set these in `~/.hermes/.env` (or via `hermes tools`):
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```bash
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HERMES_LANGFUSE_PUBLIC_KEY=pk-lf-...
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HERMES_LANGFUSE_SECRET_KEY=sk-lf-...
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HERMES_LANGFUSE_BASE_URL=https://cloud.langfuse.com # or your self-hosted URL
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```
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Without the SDK or credentials the hooks no-op silently — the plugin fails
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open.
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## Verify
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```bash
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hermes plugins list # observability/langfuse should show "enabled"
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hermes chat -q "hello" # then check Langfuse for a "Hermes turn" trace
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```
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## Optional tuning
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```bash
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HERMES_LANGFUSE_ENV=production # environment tag
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HERMES_LANGFUSE_RELEASE=v1.0.0 # release tag
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HERMES_LANGFUSE_SAMPLE_RATE=0.5 # sample 50% of traces
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HERMES_LANGFUSE_MAX_CHARS=12000 # max chars per field (default: 12000)
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HERMES_LANGFUSE_DEBUG=true # verbose plugin logging
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```
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## Disable
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```bash
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hermes plugins disable observability/langfuse
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```
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