Cette page est affichée en anglais. Une traduction française est en cours.
MCP ConfigsMay 12, 2026·3 min de lecture

langfuse-mcp — Query Langfuse Traces via MCP

Connect Langfuse observability to Claude Code/Codex via MCP: fetch traces, prompts, and datasets (37 tools). Works with Langfuse Cloud or self-hosted.

MCP Hub
MCP Hub · Community
Prêt pour agents

Cet actif peut être lu et installé directement par les agents

TokRepo expose une commande CLI universelle, un contrat d'installation, le metadata JSON, un plan selon l'adaptateur et le contenu raw pour aider les agents à juger l'adaptation, le risque et les prochaines actions.

Native · 94/100Policy : autoriser
Surface agent
Tout agent MCP/CLI
Type
Mcp
Installation
Uvx
Confiance
Confiance : Established
Point d'entrée
uvx langfuse-mcp --help
Commande CLI universelle
npx tokrepo install 71f97e34-fa9c-5c0b-8c21-69d6570cb21f
contrat d'installationJSON metadataplan adaptateurcontenu raw
Introduction

langfuse-mcp turns Langfuse into agent-queryable context: your assistant can pull real traces and prompts to debug, evaluate, and iterate on agent behavior with evidence.

Best for: Agent observability, prompt debugging, evaluation workflows, and incident postmortems

Works with: Langfuse Cloud or self-hosted; MCP clients (Claude Code/Codex); API keys via env

Setup time: 10–15 minutes

Key facts (verified)

  • README lists 37 tools across traces, observations, sessions, prompts, datasets, and more.
  • Supports selective tool loading via --tools traces,prompts (README).
  • GitHub: 87 stars · 23 forks; pushed 2026-05-06 (GitHub API verified).

Main

A good “observability loop” with langfuse-mcp:

  1. Ask your agent to reproduce a bug with tracing enabled.
  2. Use MCP tools to fetch the trace and identify the failing observation span.
  3. Pull the exact prompt version used (and labels), then patch the prompt and re-run.

If you want safer access in shared environments, enable read-only mode (--read-only) first.

README excerpt (verbatim)

Langfuse MCP Server

PyPI Downloads Python 3.10–3.14 License: MIT

Model Context Protocol server for Langfuse observability. Query traces, debug errors, analyze sessions, manage prompts.

Why langfuse-mcp?

Comparison with official Langfuse MCP (as of Jan 2026):

langfuse-mcp Official
Traces & Observations Yes No
Sessions & Users Yes No
Exception Tracking Yes No
Prompt Management Yes Yes
Dataset Management Yes No
Annotation Queues Yes No
Scores (v2) Yes No
Selective Tool Loading Yes No

This project provides a full observability toolkit — traces, observations, sessions, exceptions, prompts, datasets, annotation queues, and scores — while the official MCP focuses on prompt management.

Tools (37 total)

Category Tools
Traces fetch_traces, fetch_trace
Observations fetch_observations, fetch_observation
Sessions fetch_sessions, get_session_details, get_user_sessions

FAQ

Q: How does it authenticate? A: README shows LANGFUSE_PUBLIC_KEY / LANGFUSE_SECRET_KEY and LANGFUSE_HOST via env vars.

Q: Can I restrict what loads? A: Use --tools to load only the groups you need.

Q: Is there a safe mode? A: README documents --read-only / LANGFUSE_MCP_READ_ONLY=true.

🙏

Source et remerciements

Source: https://github.com/avivsinai/langfuse-mcp > License: MIT > GitHub stars: 87 · forks: 23

Fil de discussion

Connectez-vous pour rejoindre la discussion.
Aucun commentaire pour l'instant. Soyez le premier à partager votre avis.

Actifs similaires

SigNoz MCP Server — Query Traces, Logs & Alerts

SigNoz MCP Server connects MCP clients to your SigNoz instance: query traces/logs, inspect alerts, and automate observability workflows using an API key.

MCP Configs
MCP Hub

sp500-mcp-server — Query S&P 500 Company Data via MCP

sp500-mcp-server is an MCP server + Next.js app for querying S&P 500 company fundamentals, officers, filings, and news via Supabase.

MCP Configs
MCP Hub

MCP SSH Manager — Remote Ops via Claude/Codex

MCP SSH Manager is an MCP server that lets Claude Code and OpenAI Codex manage SSH sessions: run commands, sync files, and automate DevOps routines.

MCP Configs
MCP Hub

SEC EDGAR MCP Server — Query Filings from Agents

SEC EDGAR MCP Server lets agents query filings (10-K/10-Q/8-K) with exact numbers and source URLs. Verified 265★; Docker quickstart in ~5–10 minutes.

MCP Configs
MCP Hub
◈Accueil🔍Rechercher👤Moi