curl --request GET \
  --url https://api.cartesia.ai/agents/calls/{call_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Cartesia-Version: <cartesia-version>'

{
  "id": "<string>",
  "agent_id": "<string>",
  "status": "created",
  "agent_name": "<string>",
  "start_time": "2023-11-07T05:31:56Z",
  "end_time": "2023-11-07T05:31:56Z",
  "transcript": [
    {
      "role": "<string>",
      "start_timestamp": 123,
      "end_timestamp": 123,
      "text": "<string>",
      "text_chunks": [
        {
          "text": "<string>",
          "start_timestamp": 123
        }
      ],
      "end_reason": "<string>",
      "tool_calls": [
        {
          "id": "<string>",
          "name": "<string>",
          "arguments": {},
          "result": "<string>"
        }
      ],
      "vad_buffer_ms": 123,
      "stt_ttfb": 123,
      "tts_ttfb": 123,
      "log_event": {
        "event": "<string>",
        "metadata": {},
        "timestamp": 123
      },
      "log_metric": {
        "name": "<string>",
        "value": 123,
        "timestamp": 123
      }
    }
  ],
  "telephony_params": {
    "to": "<string>",
    "from": "<string>",
    "call_sid": "<string>",
    "direction": "<string>",
    "parameters": {},
    "headers": {},
    "connection_type": "websocket"
  },
  "summary": "<string>",
  "error_message": "<string>",
  "end_reason": "agent_hangup",
  "deployment_id": "<string>",
  "deployment_version_id": "<string>",
  "metadata": {}
}