WebRTC

const response = await fetch('https://app.phonebot.io/api/v1/sessions', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    assistant_id: 'asst_xxx',
    protocol: 'webrtc'
  })
});

const { session_id, sdp_offer } = await response.json();

const pc = new RTCPeerConnection();

// Add local audio track
const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
stream.getTracks().forEach(track => pc.addTrack(track, stream));

// Handle remote audio
pc.ontrack = (event) => {
  const audio = new Audio();
  audio.srcObject = event.streams[0];
  audio.play();
};

// Set remote offer and create answer
await pc.setRemoteDescription({ type: 'offer', sdp: sdp_offer });
const answer = await pc.createAnswer();
await pc.setLocalDescription(answer);

// Send answer to server
await fetch(`https://app.phonebot.io/api/v1/sessions/${session_id}/answer`, {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({ sdp: answer.sdp })
});