Langfuse MCP

io.github.avivsinai/langfuse-mcp · v0.14.0

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

Website Source code Set it up

Connect Runs on your machine

Terminal

claude mcp add langfuse-mcp -e LANGFUSE_PUBLIC_KEY=<LANGFUSE_PUBLIC_KEY> -e LANGFUSE_SECRET_KEY=<LANGFUSE_SECRET_KEY> -e LANGFUSE_HOST=<LANGFUSE_HOST> -e LANGFUSE_MCP_READ_ONLY=<LANGFUSE_MCP_READ_ONLY> -- uvx langfuse-mcp==0.14.0

claude_desktop_config.json

{
  "mcpServers": {
    "langfuse-mcp": {
      "command": "uvx",
      "args": [
        "langfuse-mcp==0.14.0"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "<LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_SECRET_KEY": "<LANGFUSE_SECRET_KEY>",
        "LANGFUSE_HOST": "<LANGFUSE_HOST>",
        "LANGFUSE_MCP_READ_ONLY": "<LANGFUSE_MCP_READ_ONLY>"
      }
    }
  }
}

~/.cursor/mcp.json

{
  "mcpServers": {
    "langfuse-mcp": {
      "command": "uvx",
      "args": [
        "langfuse-mcp==0.14.0"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "<LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_SECRET_KEY": "<LANGFUSE_SECRET_KEY>",
        "LANGFUSE_HOST": "<LANGFUSE_HOST>",
        "LANGFUSE_MCP_READ_ONLY": "<LANGFUSE_MCP_READ_ONLY>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "langfuse-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "langfuse-mcp==0.14.0"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "<LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_SECRET_KEY": "<LANGFUSE_SECRET_KEY>",
        "LANGFUSE_HOST": "<LANGFUSE_HOST>",
        "LANGFUSE_MCP_READ_ONLY": "<LANGFUSE_MCP_READ_ONLY>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

Name	Description
`LANGFUSE_PUBLIC_KEY` Required, secret	Langfuse public API key
`LANGFUSE_SECRET_KEY` Required, secret	Langfuse secret API key
`LANGFUSE_HOST` Optional	Langfuse API base URL (Cloud or self-hosted)
`LANGFUSE_MCP_READ_ONLY` Optional	Set true to disable write tools

Details

Package	`[email protected]` (PYPI, stdio)
First published	25 Oct 2026
Last updated	25 Oct 2026
Registry name	`io.github.avivsinai/langfuse-mcp`

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Live status

Local install

Installed and run on your own machine, so there is no public endpoint to check.

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