Langfuse

by Langfuse (ClickHouse)

Monitor, evaluate and improve your AI agents and apps.

35.7 k stars GitHub MIT (+ dossiers ee sous licence commerciale) Free when localFreemiumLocalOpen source

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What it does

Detailed traces of every LLM call: cost, latency, errors
Prompt management and versioning
Evaluations and datasets to measure quality

Install it

Requirements: Docker and Docker Compose, Git

Clone the repository

git clone --depth=1 https://github.com/langfuse/langfuse.git

Start Langfuse

cd langfuse && docker compose up

Open http://localhost:3000 in your browser

http://localhost:3000

The prompt for your agent

Paste it into your coding agent: it checks the requirements and installs it for you.

Claude CodeCodexCursorGemini CLIopencode

Prompt

Install Langfuse (https://langfuse.com) on my machine.
1. Check the requirements: Docker and Docker Compose, Git. If anything is missing, tell me before installing anything.
2. Follow the official method:
- Clone the repository: git clone --depth=1 https://github.com/langfuse/langfuse.git
- Start Langfuse: cd langfuse && docker compose up
- see http://localhost:3000
3. Check that it works, then explain how to launch it and where to start.

Always review what your agent is about to run, especially install commands.