Langfuse MCP Server

MCP server for Langfuse LLM observability — trace and observation analysis.

Local serverstdio

What is the Langfuse MCP Server?

Langfuse is an MCP integration. MCP server for Langfuse LLM observability — trace and observation analysis.

Packages and local setup

The published npm package is langfuse-observability-mcp-server, version 0.1.3. Its declared MCP transport is stdio.

The package declares LANGFUSE_SECRET_KEY (required): Langfuse secret key for authentication.; LANGFUSE_PUBLIC_KEY (required): Langfuse public key for authentication.; LANGFUSE_BASE_URL: Langfuse API base URL..

This package has launch arguments in its registry record. Use the maintainer’s configuration for those arguments rather than launching it with only the package name.

Before connecting

Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.

Project and source

View the publisher’s registry entry · Project repository. This profile uses version 0.1.3 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.

Browse related monitoring & observability MCP servers for tools that cover the same kind of work.

Configuration

VariableDescriptionRequired
LANGFUSE_SECRET_KEYLangfuse secret key for authentication.Yes
LANGFUSE_PUBLIC_KEYLangfuse public key for authentication.Yes
LANGFUSE_BASE_URLLangfuse API base URL.Optional