Create Voice Session

POST

voice

sessions

Create voice session

curl --request POST \
  --url https://api.agntix.ai/v1/voice/sessions \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "agentId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "metadata": {
    "callerId": "+1-555-000-0001"
  }
}
'

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    agentId: 'a1b2c3d4-e5f6-7890-abcd-ef1234567890',
    metadata: {callerId: '+1-555-000-0001'}
  })
};

fetch('https://api.agntix.ai/v1/voice/sessions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.agntix.ai/v1/voice/sessions"

payload = {
    "agentId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "metadata": { "callerId": "+1-555-000-0001" }
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "id": "<string>",
  "agentId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "token": "<string>",
  "serverUrl": "<string>",
  "createdAt": "2023-11-07T05:31:56Z"
}

{
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "fullName should not be empty",
    "status": 400
  },
  "meta": {
    "requestId": "req_01j3m...",
    "timestamp": "2026-04-29T10:00:00Z"
  }
}

{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Authentication required.",
    "status": 401
  },
  "meta": {
    "requestId": "req_01j3m...",
    "timestamp": "2026-04-29T10:00:00Z"
  }
}

Every endpoint on this page requires either a Clerk-issued JWT (Authorization: Bearer <token>) or an organization API key (x-api-key: pk_…). Anonymous calls return 401 Unauthorized. See Authentication for the full setup.

The agent must have voiceEnabled: true and a voicePipelineMode set. See Create Agent for voice configuration details.

Code examples

curl -X POST https://api.agntix.ai/v1/voice/sessions \
  -H "x-api-key: pk_live_••••" \
  -H "Content-Type: application/json" \
  -d '{
    "agentId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "metadata": { "callerId": "+15550001234" }
  }'

const voiceSession = await fetch('https://api.agntix.ai/v1/voice/sessions', {
  method: 'POST',
  headers: {
    'x-api-key': 'pk_live_••••',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    agentId: 'a1b2c3d4-e5f6-7890-abcd-ef1234567890',
    metadata: { callerId: '+15550001234' },
  }),
}).then(r => r.json());

// Connect to the LiveKit room using the returned token + serverUrl
const { token, serverUrl } = voiceSession;

import httpx

voice_session = httpx.post(
    "https://api.agntix.ai/v1/voice/sessions",
    headers={"x-api-key": "pk_live_••••"},
    json={
        "agentId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
        "metadata": {"callerId": "+15550001234"},
    },
).json()

token = voice_session["token"]
server_url = voice_session["serverUrl"]

Connecting via LiveKit

Use the token and serverUrl from the response to connect with the LiveKit client SDK:

Node.js

import { Room, RoomEvent, Track } from 'livekit-client';

const room = new Room({
  adaptiveStream: true,
  dynacast: true,
});

room.on(RoomEvent.TrackSubscribed, (track) => {
  if (track.kind === Track.Kind.Audio) {
    track.attach(); // plays agent audio in the browser
  }
});

await room.connect(serverUrl, token);
await room.localParticipant.setMicrophoneEnabled(true);

Sample response

{
  "id": "vs_01j3m...",
  "agentId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
  "serverUrl": "wss://agntix-voice.livekit.cloud",
  "createdAt": "2026-04-29T10:00:00Z"
}

Authorizations

x-api-key

string

header

required

Organization API key. Obtain from the dashboard. Format: pk_live_…

Body

application/json

agentId

string<uuid>

required

metadata

object

Response

Voice session created with LiveKit token.

string

agentId

string<uuid>

token

string

LiveKit access token.

serverUrl

string

LiveKit server WebSocket URL.

createdAt

string<date-time>

Create voice session

curl --request POST \
  --url https://api.agntix.ai/v1/voice/sessions \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "agentId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "metadata": {
    "callerId": "+1-555-000-0001"
  }
}
'

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    agentId: 'a1b2c3d4-e5f6-7890-abcd-ef1234567890',
    metadata: {callerId: '+1-555-000-0001'}
  })
};

fetch('https://api.agntix.ai/v1/voice/sessions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.agntix.ai/v1/voice/sessions"

payload = {
    "agentId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "metadata": { "callerId": "+1-555-000-0001" }
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "id": "<string>",
  "agentId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "token": "<string>",
  "serverUrl": "<string>",
  "createdAt": "2023-11-07T05:31:56Z"
}

{
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "fullName should not be empty",
    "status": 400
  },
  "meta": {
    "requestId": "req_01j3m...",
    "timestamp": "2026-04-29T10:00:00Z"
  }
}

{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Authentication required.",
    "status": 401
  },
  "meta": {
    "requestId": "req_01j3m...",
    "timestamp": "2026-04-29T10:00:00Z"
  }
}

Overview

Agents

Chat

Voice

Tools

Phone Numbers

Create Voice Session

Code examples

Connecting via LiveKit

Sample response

Authorizations

Body

Response

​Code examples

​Connecting via LiveKit

​Sample response

Authorizations

Body

Response

Code examples

Connecting via LiveKit

Sample response