Observability · Integration
Voice workflows that actually work — not just call transfers.
Langfuse is the observability layer under Voicent. It versions and serves the prompts your agents run, so you can improve call behavior without redeploying — and trace what happened afterward.
Overview
Langfuse is the observability and prompt-management layer that makes Voicent agents improvable rather than static. get_prompt pulls a named, versioned prompt from Langfuse at runtime, so the words your agent uses are managed as data you can edit and roll back — not code you have to redeploy. Paired with Langfuse tracing, every call is scored and tied back to the exact prompt version behind it, so you can see what a change did and iterate with evidence. This is platform infrastructure: you’ll usually configure it once rather than wire it into individual call flows.
What your agent can do with Langfuse
How it works
What the agent actually says
Put it in a workflow
Combine Langfuse with triggers, branches, and other connectors in a Voicent workflow.
Browse workflow templates →In practice
Prompt changes ship without a redeploy; every call is traceable.
A team iterating on agent behavior manages prompts in Langfuse. Voicent pulls the current prompt version at runtime via get_prompt, so a copy change ships to production without a redeploy.