Doubao Seedream API

# 5.0 Lite official channel: same endpoint for T2I and I2I.
# Provide image_url for image-to-image; omit it for text-to-image.
# size: "2K" (default) or "4K". aspect_ratio sets the shape (square when omitted).

# Step 1a: Text-to-image
curl -X POST https://api.apimodels.app/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedream-5-0-260128",
    "prompt": "A cherry blossom tree by a tranquil river, impressionist painting style",
    "size": "2K"
  }'

# Step 1b: Image-to-image (same endpoint, just add image_url)
curl -X POST https://api.apimodels.app/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedream-5-0-260128",
    "prompt": "Change the season to winter with snow",
    "image_url": "https://example.com/landscape.jpg",
    "size": "4K"
  }'

# Step 2: Poll status
curl "https://api.apimodels.app/v1/images/generations?task_id=TASK_ID" \
  -H "Authorization: Bearer YOUR_API_KEY"

# Layer decomposition (Seedream 5.0 Flash only): one PNG/JPEG in,
# a base image + up to 16 transparent PNG layers out, $0.03 per output image.
# Omit "prompt" to split every main element; name the parts ("Separate only the text.")
# for a selective split. The last sentence sets the language of layer names (default: Chinese).
curl -X POST https://api.apimodels.app/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedream-5-0-flash",
    "image_url": "https://example.com/poster.jpg",
    "layer_decomposition": true,
    "prompt": "Separate every main element onto its own layer. Write every layer name and description in English.",
    "size": "2K"
  }'

# Poll. resultUrls = base first, then layers in z_index order;
# resultJson.layers[i] = { z_index, name, description, bounding_box: { absolute, normalized }, url }
curl "https://api.apimodels.app/v1/images/generations?task_id=TASK_ID" \
  -H "Authorization: Bearer YOUR_API_KEY"