{
  "model": "bytedance/seedream-5.0-lite",
  "size": "2048x2048",
  "response_format": "b64_json",
  "output_format": "png",
  "watermark": false,
  "prompt": "A premium editorial product photograph of one sage green reusable travel cup with a rounded cylindrical body and matching fitted lid, no handle. A clearly readable, medium-sized dark wordmark reading exactly \"Mercatus AI\" in clean sans-serif lettering is printed on its front. Preserve the exact capitalization and the space between the two words. Centered three-quarter view on a pale warm ivory studio surface, soft natural side lighting, subtle long shadow, refined matte tactile finish. Contemporary minimalist sustainable coffee brand, restrained high-end art direction. Show the complete cup, generous negative space. Square image. No other objects, no other text, no watermark."
}