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v1

latestOpenAPI 3.0.02026-07-265013.1 KB

Generate or Edit Image

Submit Nanobanana image generation or editing task.

Usage Modes

  1. Text-to-Image Generation (TEXTTOIAMGE)

    • Provide prompt and set type to "TEXTTOIAMGE"
    • Model will generate a new image based on the text description

  2. Image-to-Image Editing (IMAGETOIAMGE)

    • Provide prompt, imageUrls and set type to "IMAGETOIAMGE"
    • Model will edit the input images according to the prompt

Important Notes

  • You can generate 1-4 images per request
  • Callback URL is required for task completion notifications
post/api/v1/nanobanana/generate

Request body

promptstring required

Text prompt describing the desired image or edit.

numImagesinteger

Number of images to generate. Min: 1, Max: 4

imageUrlsstring[]

Array of input image URLs for image editing mode

type'IMAGETOIAMGE' | 'TEXTTOIAMGE' required

Generation type:

  • TEXTTOIAMGE: Text to Image
  • IMAGETOIAMGE: Image Editing
watermarkstring

Watermark text to add to generated images

image_size'1:1' | '9:16' | '16:9' | '3:4' | '4:3' | '3:2' | '2:3' | '5:4' | '4:5' | '21:9'

Image aspect ratio. Supported ratios:

  • 1:1: Square
  • 9:16: Portrait (mobile)
  • 16:9: Landscape (widescreen)
  • 3:4: Portrait
  • 4:3: Landscape (traditional)
  • 3:2: Landscape (photo)
  • 2:3: Portrait (photo)
  • 5:4: Portrait (close to square)
  • 4:5: Portrait (close to square)
  • 21:9: Ultra-wide landscape
callBackUrlstring uri required

Callback URL to receive task completion notifications (required)

Example request

{
  "prompt": "A serene mountain landscape at sunset with a lake reflecting the orange sky",
  "numImages": 1,
  "type": "TEXTTOIAMGE",
  "image_size": "16:9",
  "callBackUrl": "https://your-callback-url.com/callback"
}

Response

Request successful

code200 | 400 | 401 | 500

Response status code

  • 200: Success
  • 400: Parameter error
  • 401: Unauthorized
  • 500: Server internal error
msgstring

Response message

Example response

{
  "msg": "success",
  "data": {
    "taskId": "task12345"
  }
}