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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": "flux-kontext-pro", "callback_url": "https://your-domain.com/callback", "input": { "prompt": "A luxury perfume bottle on a reflective marble surface, premium studio lighting", "size": "16:9", "output_format": "png" } } '
{
  "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.

​
Flux Kontext Image Generation

Flux Kontext is powered by Black Forest Labs. It supports both text-to-image generation and image editing through the same unified submit endpoint.

​
Available Models

  • flux-kontext-pro - Flux Kontext Pro text-to-image generation
  • flux-kontext-pro-edit - Flux Kontext Pro image editing, image_urls is required
  • flux-kontext-max - Flux Kontext Max text-to-image generation
  • flux-kontext-max-edit - Flux Kontext Max image editing, image_urls is required

​
Notes

  • size supports 1:1, 4:3, 3:4, 16:9, 9:16, 21:9, 16:21
  • output_format supports png, jpg
  • image_urls is required for edit models
  • Only image_urls[0] is used as the input image
  • Other downstream fields are not exposed in the current API and use system defaults
  • Credits are charged directly according to the configured model price

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

Flux Kontext model identifier

Available options:
flux-kontext-pro,
flux-kontext-pro-edit,
flux-kontext-max,
flux-kontext-max-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