Integrations
Langflow
Native Muster integration in Langflow — set three env vars and your flows are traced automatically.
Langflow is a React-based no-code UI for LangChain. Since Langflow 1.0.17 it ships with a native Muster (langfuse) integration — set three environment variables and every flow run is traced.
Setup
1. Get Muster API keys
Sign up at your Muster instance (or self-host) and copy the public/secret keys from your project settings.
2. Set environment variables
Set these before starting Langflow:
LANGFUSE_SECRET_KEY="sk-lf-..."
LANGFUSE_PUBLIC_KEY="pk-lf-..."
LANGFUSE_HOST="https://app.getmuster.io" # or your self-hosted Muster URLIf you're running Langflow via docker-compose, add the same three vars to
the langflow service's environment: block.
3. Launch Langflow
pip install langflow
python -m langflow run4. View traces
Once you run flows from the UI or call them via the API, traces appear in Muster automatically.
