curl --request POST \
  --url https://prod.featherhq.com/api/v1/agent-test/sessions/start \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "agentId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "agentVersionId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "metadata": {},
  "variables": {}
}
'

{
  "callId": "<string>",
  "roomName": "<string>",
  "livekitUrl": "<string>",
  "accessToken": "<string>",
  "agentVersion": {
    "id": "<string>",
    "version": 123,
    "name": "<string>"
  }
}