Google - Nano Banana Pro
Image generation using Google’s Pro Image to Image model
Query Task Status
After submitting a task, use the unified query endpoint to check progress and retrieve results:Get Task Details
Learn how to query task status and retrieve generation results
For production use, we recommend using the
callBackUrl parameter to receive automatic notifications when generation completes, rather than polling the status endpoint.Related Resources
Rate limits and quotas are enforced by Apikley and may differ from upstream providers.
OpenAPI
market/google/pro-image-to-image.json post /api/v1/jobs/createTask
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openapi: 3.0.0
info:
title: Nano-banana-pro API
description: Apikley Nano-banana-pro API Documentation
version: 1.0.0
contact:
name: Technical Support
email: [email protected]
servers:
- url: https://api.apikley.ru
description: API Server
security:
- BearerAuth: []
paths:
/api/v1/jobs/createTask:
post:
summary: Generate content using nano-banana-pro
operationId: nano-banana-pro
requestBody:
required: true
content:
application/json:
schema:
type: object
required:
- model
properties:
model:
type: string
enum:
- nano-banana-pro
default: nano-banana-pro
description: |-
The model name to use for generation. Required field.
- Must be `nano-banana-pro` for this endpoint
example: nano-banana-pro
callBackUrl:
type: string
format: uri
description: >-
The URL to receive generation task completion updates.
Optional but recommended for production use.
- System will POST task status and results to this URL when
generation completes
- Callback includes generated content URLs and task
information
- Your callback endpoint should accept POST requests with
JSON payload containing results
- Alternatively, use the Get Task Details endpoint to poll
task status
example: https://your-domain.com/api/callback
input:
type: object
description: Input parameters for the generation task
properties:
prompt:
description: >-
A text description of the image you want to generate
(Max length: 10000 characters)
type: string
maxLength: 10000
example: >-
Comic poster: cool banana hero in shades leaps from
sci-fi pad. Six panels: 1) 4K mountain landscape, 2)
banana holds page of long multilingual text with auto
translation, 3) Gemini 3 hologram for
search/knowledge/reasoning, 4) camera UI sliders for
angle focus color, 5) frame trio 1:1-9:16, 6) consistent
banana poses. Footer shows Google icons. Tagline: Nano
Banana Pro now on Apikley.
image_input:
description: >-
Input images to transform or use as reference (supports
up to 8 images) (File URL after upload, not file
content; Accepted types: image/jpeg, image/png,
image/webp; Max size: 30.0MB)
type: array
items:
type: string
format: uri
maxItems: 8
example: []
aspect_ratio:
description: Aspect ratio of the generated image
type: string
enum:
- '1:1'
- '2:3'
- '3:2'
- '3:4'
- '4:3'
- '4:5'
- '5:4'
- '9:16'
- '16:9'
- '21:9'
- auto
default: '1:1'
example: '1:1'
resolution:
description: Resolution of the generated image
type: string
enum:
- 1K
- 2K
- 4K
default: 1K
example: 1K
output_format:
description: Format of the output image
type: string
enum:
- png
- jpg
default: png
example: png
required:
- prompt
example:
model: nano-banana-pro
callBackUrl: https://your-domain.com/api/callback
input:
prompt: >-
Comic poster: cool banana hero in shades leaps from sci-fi
pad. Six panels: 1) 4K mountain landscape, 2) banana holds
page of long multilingual text with auto translation, 3)
Gemini 3 hologram for search/knowledge/reasoning, 4) camera UI
sliders for angle focus color, 5) frame trio 1:1-9:16, 6)
consistent banana poses. Footer shows Google icons. Tagline:
Nano Banana Pro now on Apikley.
image_input: []
aspect_ratio: '1:1'
resolution: 1K
output_format: png
responses:
'200':
description: Request successful
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ApiResponse'
- type: object
properties:
data:
type: object
properties:
taskId:
type: string
description: >-
Task ID, can be used with Get Task Details
endpoint to query task status
example: task_nano-banana-pro_1765178625768
example:
code: 200
msg: success
data:
taskId: task_nano-banana-pro_1765178625768
'500':
$ref: '#/components/responses/Error'
components:
schemas:
ApiResponse:
type: object
properties:
code:
type: integer
enum:
- 200
- 401
- 402
- 404
- 422
- 429
- 455
- 500
- 501
- 505
description: >-
Response status code
- **200**: Success - Request has been processed successfully
- **401**: Unauthorized - Authentication credentials are missing or
invalid
- **402**: Insufficient Credits - Account does not have enough
credits to perform the operation
- **404**: Not Found - The requested resource or endpoint does not
exist
- **422**: Validation Error - The request parameters failed
validation checks
- **429**: Rate Limited - Request limit has been exceeded for this
resource
- **455**: Service Unavailable - System is currently undergoing
maintenance
- **500**: Server Error - An unexpected error occurred while
processing the request
- **501**: Generation Failed - Content generation task failed
- **505**: Feature Disabled - The requested feature is currently
disabled
msg:
type: string
description: Response message, error description when failed
example: success
responses:
Error:
description: Server Error
securitySchemes:
BearerAuth:
type: http
scheme: bearer
bearerFormat: API Key
description: >-
All APIs require authentication via Bearer Token.
Get API Key:
1. Visit [API Key Management Page](https://app.apikley.ru/keys) to get your
API Key
Usage:
Add to request header:
Authorization: Bearer APIKLEY_API_KEY
Note:
- Keep your API Key secure and do not share it with others
- If you suspect your API Key has been compromised, reset it immediately
in the management page
To find navigation and other pages in this documentation, fetch the llms.txt file at: https://docs.apikley.ru/llms.txt