curl --request POST \
  --url https://api.stewrd.dev/v1/agent \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "message": "What is the capital of France?"
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "object": "agent.response",
  "status": "completed",
  "message": "<string>",
  "tool_calls": [
    {
      "id": "<string>",
      "name": "<string>",
      "arguments": {}
    }
  ],
  "capabilities_used": [
    "<string>"
  ],
  "files": [
    {
      "name": "<string>",
      "content": "<string>",
      "url": "<string>"
    }
  ],
  "usage": {
    "credits_this_request": 123,
    "credits_remaining": 123,
    "tokens_used": 123
  },
  "meta": {
    "duration_ms": 123,
    "project_id": "<string>",
    "plan": "<string>"
  },
  "_compute_instance": "<string>"
}