curl --request POST \
  --url https://api.oneinbox.ai/v1/calls \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "agent_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "to_number": "<string>",
  "from_number": "<string>",
  "scheduled_at": "2023-11-07T05:31:56Z",
  "variables": {},
  "webhook_url": "<string>",
  "overrides": {
    "llm": {
      "model": "<string>",
      "temperature": 123,
      "system_prompt": "<string>"
    },
    "transcriber": {
      "model": "<string>",
      "language": "<string>"
    },
    "tts": {
      "voice_id": "<string>",
      "model": "<string>",
      "speed": 123,
      "stability": 123
    },
    "first_message": "<string>"
  },
  "metadata": {}
}
'

{
  "id": "<string>",
  "agent_id": "<string>",
  "type": "<string>",
  "status": "<string>",
  "from_number": "<string>",
  "to_number": "<string>",
  "room_name": "<string>",
  "direction": "<string>",
  "scheduled_at": "2023-11-07T05:31:56Z",
  "variables": {},
  "started_at": "2023-11-07T05:31:56Z",
  "ended_at": "2023-11-07T05:31:56Z",
  "duration_seconds": 123,
  "end_reason": "<string>",
  "transcript": "<string>",
  "messages": [
    "<unknown>"
  ],
  "recording_url": "<string>",
  "analysis": {},
  "latency": {},
  "cost_cents": 123,
  "metadata": {},
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "twilio_call_sid": "<string>",
  "outcome": "<string>",
  "ai_summary": "<string>",
  "credits_used": 123
}