mirrors/hermes-agent
1
0
Fork 0
mirror of https://github.com/NousResearch/hermes-agent.git synced 2026-05-18 04:41:56 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 7
hermes-agent/plugins/observability/langfuse
History
Guillaume Meyer 8ab8bc2f03 fix(plugins): remove unreachable hermes tools → Langfuse path 
The langfuse plugin is hooks-only (no toolsets), so it never appears in
`hermes tools` — that menu iterates `_get_effective_configurable_toolsets()`
(= `CONFIGURABLE_TOOLSETS` + plugin-registered toolsets), and "langfuse"
is in neither. The `TOOL_CATEGORIES["langfuse"]` setup wizard (with its
`post_setup: "langfuse"` hook that pip-installs the SDK and writes
`plugins.enabled`) was reachable only when a toolset key "langfuse" got
enabled, which can't happen — so it's been dead code, and the docs that
promised "Setup (interactive): hermes tools → Langfuse Observability"
were silently broken.

Right home for that wizard is `hermes plugins` (e.g. auto-running a
plugin's post-setup hook on enable), which is a generic plugin-setup
mechanism worth designing properly rather than shoehorning langfuse
back into `hermes tools`. Until that exists, point users at the
working manual flow.

Code:
- Delete `TOOL_CATEGORIES["langfuse"]` (24 lines) — unreachable.
- Delete the `post_setup_key == "langfuse"` branch in `_run_post_setup`
  (29 lines) — only caller was the deleted TOOL_CATEGORIES entry.

Docs / comments (point at the manual flow + interactive `hermes plugins`):
- `plugins/observability/langfuse/README.md`: collapse the two-option
  setup section to the single working flow.
- `plugins/observability/langfuse/plugin.yaml`: update `description`.
- `plugins/observability/langfuse/__init__.py`: update module docstring.
- `hermes_cli/config.py`: update inline comment above the LANGFUSE_*
  env-var allow-list.
- `website/docs/user-guide/features/built-in-plugins.md`: collapse
  "Setup (interactive)" + "Setup (manual)" into one accurate block.
- `website/docs/reference/environment-variables.md`: update the
  cross-reference in the Langfuse env-vars section.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-16 17:15:19 -07:00
..
__init__.py fix(plugins): remove unreachable hermes tools → Langfuse path 2026-05-16 17:15:19 -07:00
plugin.yaml fix(plugins): remove unreachable hermes tools → Langfuse path 2026-05-16 17:15:19 -07:00
README.md fix(plugins): remove unreachable hermes tools → Langfuse path 2026-05-16 17:15:19 -07:00

README.md

Langfuse Observability Plugin

This plugin ships bundled with Hermes but is opt-in — it only loads when you explicitly enable it.

Enable

pip install langfuse
hermes plugins enable observability/langfuse

Or check the box in the interactive hermes plugins UI.

Required credentials

Set these in ~/.hermes/.env:

HERMES_LANGFUSE_PUBLIC_KEY=pk-lf-...
HERMES_LANGFUSE_SECRET_KEY=sk-lf-...
HERMES_LANGFUSE_BASE_URL=https://cloud.langfuse.com   # or your self-hosted URL

Without the SDK or credentials the hooks no-op silently — the plugin fails open.

Verify

hermes plugins list                 # observability/langfuse should show "enabled"
hermes chat -q "hello"              # then check Langfuse for a "Hermes turn" trace

Optional tuning

HERMES_LANGFUSE_ENV=production       # environment tag
HERMES_LANGFUSE_RELEASE=v1.0.0       # release tag
HERMES_LANGFUSE_SAMPLE_RATE=0.5      # sample 50% of traces
HERMES_LANGFUSE_MAX_CHARS=12000      # max chars per field (default: 12000)
HERMES_LANGFUSE_DEBUG=true           # verbose plugin logging

Disable

hermes plugins disable observability/langfuse