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Browser calls let you try an agent without a phone number. They use your free credit first, then your balance, at the same $0.10 per minute as other calls.

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In the dashboard

Open the agent and start a browser call. Allow microphone access when your browser asks. Speak as a caller would. You can test the latest draft before you publish it. A draft test never reaches live callers.

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What to check

  • The greeting is short and says who is answering.
  • The agent answers the questions callers actually ask.
  • It collects the details you need and repeats them back.
  • It transfers to a person when it should. See Handoff.
  • It does not make things up. If it does, tighten the instructions or add the facts to a knowledge base.
After the call, open it to read the transcript, the turn timings and the summary.

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If the call does not connect

  • Check that your browser has microphone permission for the dashboard.
  • Try another network. Some networks block the media traffic browser calls need. Larynth tries a direct connection first and then falls back to a relay.
  • Use a current version of Chrome, Edge, Firefox or Safari.

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With the API

A browser call is a WebRTC session. Your client creates an SDP offer, and the API returns the answer.
  1. Request relay credentials with POST /v1/web-calls/ice-servers. They are short-lived.
  2. Create your peer connection with those servers and wait for ICE gathering to finish. The API takes a complete SDP offer with no trickle candidates.
  3. Send the offer to POST /v1/assistants/{assistant_id}/web-calls. Set use_draft to test the latest draft instead of the published version.
  4. Apply the returned sdp_answer. The call ends on its own after max_duration_s.
Most people use the dashboard for this. The API is for building your own test client.