curl --request POST \
  --url https://api.apimart.ai/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gemini-2.5-flash-image-preview",
    "prompt": "月明かりの下の竹林の小道",
    "size": "1:1",
    "n": 1,
    "image_urls": [
      "https://cdn.apimart.ai/files/9998237590083776-36dfe26e-f6dd-43d4-83d5-afc5e6d29070-image_task_01K9BX28VRC2WG4S6F0N0DYWPJ_0.png"
    ]
  }'

{
  "code": 200,
  "data": [
    {
      "status": "submitted",
      "task_id": "task_01K8SGYNNNVBQTXNR4MM964S7K"
    }
  ]
}