Langfuse MCP Server
Usage: 12,518 PyPI downloads last month (pypistats, 2026-08-19). v0.10.1.
Local MCP server and skill for Langfuse. Debug traces, sessions, and exceptions from Claude Code, Codex, Cursor, or any MCP client.
Why this instead of native Langfuse MCP?
Use this for local debug: first-class traces, sessions, and exceptions; route-decision tools; compact / file-dump output; plus the included langfuse skill.
Use official Langfuse MCP for hosted, zero-install access to the broader API (score writes, comments, models, media).
As of June 2026:
| langfuse-mcp | Native Langfuse MCP | |
|---|---|---|
| Primary fit | Local debug: traces, sessions, exceptions | Hosted, zero-install API surface |
| Deployment | Local stdio or HTTP, via the Langfuse Python SDK |
Native streamable HTTP at /api/public/mcp |
| Trace / session / exception tools | First-class | Observation/API-oriented access |
| Route-decision tools | Yes | No |
| Token & output control | Compact summaries, truncation, file-dump mode, tool-group gating | Hosted tool response + client |
| Metrics & dataset runs | Yes | Yes |
| Prompt, dataset, queue & score reads | Yes | Yes |
| Score writes, comments, models, media | No | Yes |






