mcp-server-langfuse

MCP.Pizza Chef: langfuse

Two tools do all the work: list the prompts stored in your Langfuse account, and fetch one by name with its variables already filled in. Nothing here can create, edit or delete a prompt, despite the project describing itself as prompt management, and only prompts marked as production ever appear. You need a Langfuse account and its pair of keys, and you have to build the project yourself, because it was never released for a one-line install.

Unmaintained · no commits since February 2025; no successor named

Coding

Writing

Use This MCP server To

Pull a prompt my team wrote into my current chat See which prompts our Langfuse account holds Fill a prompt template with today's values Reuse a team-approved prompt instead of retyping it

README

Langfuse Prompt Management MCP Server

Model Context Protocol (MCP) Server for Langfuse Prompt Management. This server allows you to access and manage your Langfuse prompts through the Model Context Protocol.

Demo

Quick demo of Langfuse Prompts MCP in Claude Desktop (unmute for voice-over explanations):

langfuse-prompts-mcp-server-1080.mp4

Features

MCP Prompt

This server implements the MCP Prompts specification for prompt discovery and retrieval.

prompts/list: List all available prompts
- Optional cursor-based pagination
- Returns prompt names and their required arguments, limitation: all arguments are assumed to be optional and do not include descriptions as variables do not have specification in Langfuse
- Includes next cursor for pagination if there's more than 1 page of prompts
prompts/get: Get a specific prompt
- Transforms Langfuse prompts (text and chat) into MCP prompt objects
- Compiles prompt with provided variables

mcp-server-langfuse FAQ

What sign-in details does it need?

A Langfuse account with two keys, one public and one secret, plus the web address of your Langfuse instance. The free hosted tier is enough, or point it at your own installation.

Can it save or change my prompts?

No. It only reads, whatever the project description implies. Writing and editing still happens inside Langfuse itself.

Why are some of my prompts missing?

Only prompts labelled production in Langfuse are returned. Drafts and any other label are invisible to it.

How hard is setup?

Developer level. There is no published package, so you clone the code, install it, run a build step, and point your config at the built file.

Which apps does it work in?

Claude Desktop and Cursor are the documented ones, and any app that can run a local server command will work.

Can I use this to reuse my team's approved prompts?

Yes, that is exactly its purpose. One tool lists what is available and the other returns a chosen prompt with your values substituted in.

Is it still maintained?

No. The last change landed in February 2025, about eighteen months ago, and the known rough edges it lists were never fixed. It is not marked archived and it names no successor.