Integrations
Vapi
Trace Vapi voice AI conversations in Muster — connect from the Vapi observability provider settings.
Vapi is a voice AI platform. The Muster (langfuse) integration captures every conversation as a trace — every text-model call shows up as a generation span.
Setup
1. Get Muster API keys
Sign up at your Muster instance and grab the public/secret keys plus the
host URL (https://app.getmuster.io or your self-hosted URL).
2. Add Muster as an observability provider in Vapi
In the Vapi dashboard, navigate to Provider Credentials → Observability Providers → Langfuse and paste in:
- Public key
- Secret key
- Host URL
3. Use Vapi normally
After saving, conversation traces appear in your Muster dashboard automatically. Generation spans show the text model output (not the synthesized speech).
