curl --request POST \
  --url https://api.apimart.ai/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-APIMart-Response-Version: 2026-07-27' \
  --data '{
    "model": "grok-imagine-image-2.0",
    "prompt": "雨の夜、ネオンに照らされた映画のような都市の通り",
    "n": 1,
    "aspect_ratio": "16:9",
    "resolution": "2k",
    "quality": "medium"
  }'

{
  "code": 202,
  "data": {
    "id": "task_01KZQE5CM0Y3KZ6M1N1BK619MX",
    "object": "generation.task",
    "type": "image",
    "status": "pending",
    "progress": 0,
    "poll_url": "/v1/tasks/task_01KZQE5CM0Y3KZ6M1N1BK619MX"
  }
}