Langfuse MCP

MCP server · by avivsinai

Developer Tools Python v0.14.0

Langfuse MCP server for accessing and analyzing telemetry data via natural language

View source ↗ Website ↗ Generate config for multiple servers More servers

Install

Pin version registry version 0.14.0

Python
uvx langfuse-mcp

Python
uvx langfuse-mcp@0.14.0

Setup by client

Pick your client — the config below is generated for this server (local stdio). Copy respects the “Pin version” switch above.

claude_desktop_config.json

{
  "mcpServers": {
    "langfuse-mcp": {
      "command": "uvx",
      "args": [
        "langfuse-mcp"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "<YOUR_LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_SECRET_KEY": "<YOUR_LANGFUSE_SECRET_KEY>"
      }
    }
  }
}

{
  "mcpServers": {
    "langfuse-mcp": {
      "command": "uvx",
      "args": [
        "langfuse-mcp@0.14.0"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "<YOUR_LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_SECRET_KEY": "<YOUR_LANGFUSE_SECRET_KEY>"
      }
    }
  }
}

Format verified against the official Claude Desktop docs ↗.

terminal

claude mcp add --env LANGFUSE_PUBLIC_KEY=<YOUR_LANGFUSE_PUBLIC_KEY> --env LANGFUSE_SECRET_KEY=<YOUR_LANGFUSE_SECRET_KEY> langfuse-mcp -- uvx langfuse-mcp

claude mcp add --env LANGFUSE_PUBLIC_KEY=<YOUR_LANGFUSE_PUBLIC_KEY> --env LANGFUSE_SECRET_KEY=<YOUR_LANGFUSE_SECRET_KEY> langfuse-mcp -- uvx langfuse-mcp@0.14.0

Format verified against the official Claude Code docs ↗.

.cursor/mcp.json

{
  "mcpServers": {
    "langfuse-mcp": {
      "command": "uvx",
      "args": [
        "langfuse-mcp"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "<YOUR_LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_SECRET_KEY": "<YOUR_LANGFUSE_SECRET_KEY>"
      }
    }
  }
}

{
  "mcpServers": {
    "langfuse-mcp": {
      "command": "uvx",
      "args": [
        "langfuse-mcp@0.14.0"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "<YOUR_LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_SECRET_KEY": "<YOUR_LANGFUSE_SECRET_KEY>"
      }
    }
  }
}

Format verified against the official Cursor docs ↗.

.vscode/mcp.json

{
  "servers": {
    "langfuse-mcp": {
      "command": "uvx",
      "args": [
        "langfuse-mcp"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "<YOUR_LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_SECRET_KEY": "<YOUR_LANGFUSE_SECRET_KEY>"
      }
    }
  }
}

{
  "servers": {
    "langfuse-mcp": {
      "command": "uvx",
      "args": [
        "langfuse-mcp@0.14.0"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "<YOUR_LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_SECRET_KEY": "<YOUR_LANGFUSE_SECRET_KEY>"
      }
    }
  }
}

Format verified against the official VS Code docs ↗.

mcp_config.json

{
  "mcpServers": {
    "langfuse-mcp": {
      "command": "uvx",
      "args": [
        "langfuse-mcp"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "<YOUR_LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_SECRET_KEY": "<YOUR_LANGFUSE_SECRET_KEY>"
      }
    }
  }
}

{
  "mcpServers": {
    "langfuse-mcp": {
      "command": "uvx",
      "args": [
        "langfuse-mcp@0.14.0"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "<YOUR_LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_SECRET_KEY": "<YOUR_LANGFUSE_SECRET_KEY>"
      }
    }
  }
}

Format verified against the official Windsurf docs ↗.

Environment variables

Defined in the server's official registry manifest. Required secrets are shown as <YOUR_…> placeholders in the configs above.

LANGFUSE_PUBLIC_KEY required secret — Langfuse public API key
LANGFUSE_SECRET_KEY required secret — Langfuse secret API key
LANGFUSE_HOST — Langfuse API base URL (Cloud or self-hosted)
LANGFUSE_MCP_READ_ONLY — Set true to disable write tools

GitHub

⭐ 113 stars · 最近更新于 32 天前 · MIT license

About this server

Distributed as Python, listed under Developer Tools. Review our MCP security guide before granting access to real data.

Frequently asked questions

How do I install Langfuse MCP?

Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.

Is Langfuse MCP free to use?

The MCP server itself is free to install. The source is public on https://github.com/avivsinai/langfuse-mcp. Any third-party service it calls may require its own API key and account.

Which clients support Langfuse MCP?

Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.

Add this badge

Publish this server? Link back with a badge on your README or site — copy either snippet.

Markdown

[![Listed on MCPNav](https://mcpnav.net/badge/langfuse-mcp.svg)](https://mcpnav.net/server/langfuse-mcp/)

HTML

<a href="https://mcpnav.net/server/langfuse-mcp/"><img src="https://mcpnav.net/badge/langfuse-mcp.svg" alt="Listed on MCPNav" height="20"></a>