Langfuse MCP

Usage: 12,518 PyPI downloads last month (pypistats, 2026-08-19). v0.10.1. It runs locally over stdio via the published package.

People who work with langfuse, agent skills and codex and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-09-25 · ★ 108 · #2 OF 125 MAINTAINED DEVOPS & MONITORING · VERIFIED 2026-09-30

MIT · Python servers · how we verify → /methodology

01 · Install Langfuse MCP

before you install - you'll need

Set LANGFUSE_PUBLIC_KEY, LANGFUSE_SECRET_KEY, LANGFUSE_HOST, LANGFUSE_MCP_DEFAULT_OUTPUT_MODE, LANGFUSE_MCP_READ_ONLY before connecting.

Claude Code

claude mcp add avivsinai-langfuse-mcp -- uvx langfuse-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "avivsinai-langfuse-mcp": {
      "command": "uvx",
      "args": [
        "langfuse-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

pypi package langfuse-mcp - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.avivsinai is GitHub-verified and matches the repo owner

03 · What Langfuse MCP can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.12.1 · 2026-09-25

[0.12.1] - 2026-09-25 · Fixed · Rebuilt traces and session summaries return null for absent session_id, user_id, and release values that Observations API v2 sends as empty strings. · Compact output keeps ordinary…

v0.12.0 · 2026-09-25

[0.12.0] - 2026-09-25 · Upgrade notes · Langfuse Cloud removes the v1 trace, session, and observation routes, v2 score routes, and legacy dataset-run read routes on 2026-11-16. Version 0.12.0 uses their replacement…

v0.11.0 · 2026-09-10

[0.11.0] - 2026-09-10 · Changed · Exception tools (find_exceptions, find_exceptions_in_file, get_exception_details, get_error_count) now detect errors by observation level == "ERROR" with a shared complete scan across…

04 · Who maintains Langfuse MCP

Langfuse MCP is maintained by avivsinai. It's the only MCP server we track from this author; the repo dates to Mar 2025.

05 · Facts

repository: github.com/avivsinai/langfuse-mcp
website: https://github.com/avivsinai/langfuse-mcp
category: DevOps & monitoring - ranked #2 of 125 actively-maintained DevOps & monitoring servers as of 2026-09-30.
release cadence: 5 releases in the last 90 days (latest 2026-09-25)
registry: io.github.avivsinai/langfuse-mcp (active, first published 2026-09-25 · 2 versions)
packages: pypi:langfuse-mcp

06 · Langfuse MCP FAQ

What is Langfuse MCP?

Usage: 12,518 PyPI downloads last month (pypistats, 2026-08-19). v0.10.1. It runs locally over stdio via the published package.

Is Langfuse MCP still maintained?

Yes - as of 2026-09-30, its last commit was 2026-09-25 and it shipped 5 releases in the last 90 days. We re-verify nightly.

How do I install Langfuse MCP?

Run `uvx langfuse-mcp`. The README documents 5 environment variables (LANGFUSE_PUBLIC_KEY, LANGFUSE_SECRET_KEY, LANGFUSE_HOST…) to set first. Set LANGFUSE_PUBLIC_KEY, LANGFUSE_SECRET_KEY, LANGFUSE_HOST, LANGFUSE_MCP_DEFAULT_OUTPUT_MODE, LANGFUSE_MCP_READ_ONLY before connecting. You can also paste the ready-made client config above.

Does Langfuse MCP run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Langfuse MCP

Alternatives to Langfuse MCP

Maintained DevOps & monitoring servers if Langfuse MCP isn't the fit.

Pairs well with

Servers that cover what Langfuse MCP doesn't - only shown when the pairing reason fits the companion.

head to head · Langfuse MCP vs World Monitor · Langfuse MCP vs Preflight

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