{
  "model": "bytedance/seedream-5.0-pro",
  "image": "data:image/png;base64,<base64 bytes of inputs/still-life.png>",
  "size": "1536x1024",
  "response_format": "b64_json",
  "output_format": "png",
  "watermark": false,
  "optimize_prompt_options": {
    "mode": "fast"
  },
  "prompt": "Change the terracotta vase at <point>250 490</point> in Image 1 to a matte cobalt-blue ceramic vase. Preserve its shape and position. Keep the lemon, leaf, shelf, lighting and camera framing unchanged."
}