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POST
/
api
/
generate
/
submit
curl --request POST \
  --url https://api.poyo.ai/api/generate/submit \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "seedream-4",
  "callback_url": "https://your-domain.com/callback",
  "input": {
    "prompt": "A minimalist product photo of a ceramic mug on a clean studio background",
    "size": "1:1",
    "resolution": "1K",
    "n": 1
  }
}
'
{
  "code": 200,
  "data": {
    "task_id": "task-unified-1757165031-uyujaw3d",
    "status": "not_started",
    "created_time": "2025-11-12T10:30:00"
  }
}
  1. After submission, a task_id will be returned. If you provided a callback_url, when the task status becomes finished or failed, a POST request will be sent to the callback_url.
  2. Regardless of whether callback_url is provided, you can retrieve the response result through the unified Query Task Status endpoint.

​
Seedream-4 Image Generation

Seedream-4 is powered by ByteDance Seedream-4. It supports both text-to-image generation and image editing through the same unified submit endpoint.

​
Available Models

  • seedream-4 - Text-to-image generation, optionally with reference images
  • seedream-4-edit - Image editing mode. image_urls is required

​
Notes

  • size maps to aspect ratio and supports 1:1, 3:4, 4:3, 16:9, 9:16, 3:2, 2:3, 21:9
  • resolution supports 1K, 2K, 4K, with default 2K
  • n supports 1-15
  • The total of image_urls plus n must not exceed 15
  • Credits are pre-deducted as base credits * n. If fewer images are returned than requested, the unused portion is refunded automatically

Authorizations

​
Authorization
string
header
required

All API endpoints require Bearer Token authentication

Get your API Key:

Visit the API Key Management Page to get your API Key

Add it to the request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json
​
model
enum<string>
required

Seedream-4 model identifier

Available options:
seedream-4,
seedream-4-edit
​
input
object
required

Input parameters for generation

​
callback_url
string<uri>

Webhook callback URL for result notifications

Example:

"https://your-domain.com/callback"

Response

Task submitted successfully

​
code
integer
required

HTTP status code

Example:

200

​
data
object
required