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Google - Nano Banana Edit ​

This page is generated from the upstream official OpenAPI documentation. Endpoints, parameters and examples match the official docs; brand and API domain are replaced with ModelFold.

Endpoint ​

POST /jobs/createTask

Full URL: https://ai.modelfold.online/v1/jobs/createTask

Authentication: every request must include the Authorization: Bearer <API_KEY> header.

Image editing using Google's Nano Banana Edit 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

TIP

For production use, we recommend using the callBackUrl parameter to receive automatic notifications when generation completes, rather than polling the status endpoint.

Request Parameters ​

Body (application/json) ​

ParameterTypeRequiredDescription
modelstringYesThe model name to use for generation. Required field.
- Must be google/nano-banana-edit for this endpoint Default："google/nano-banana-edit"。 Allowed values：google/nano-banana-edit。 示例：google/nano-banana-edit。
callBackUrlstringNoThe 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
- To ensure callback security, see Webhook Verification Guide for signature verification implementation 示例：https://your-domain.com/api/callback。
inputobjectNoInput parameters for the generation task
  input.promptstringYesThe prompt for image editing (Max length: 20000 characters) 示例：turn this photo into a character figure. Behind it, place a box with the character’s image printed on it, and a computer showing the Blender modeling process on its screen. In front of the box, add a round plastic base with the character figure standing on it. set the scene indoors if possible。
  input.image_urlsarray&lt;string&gt;YesList of URLs of input images for editing,up to 10 images. (File URL after upload, not file content; Accepted types: image/jpeg, image/png, image/webp; Max size: 10.0MB)
  input.output_formatstringNoOutput format for the images Default："png"。 Allowed values：png / jpeg。 示例：png。
  input.aspect_ratiostringNoAspect ratio of the output image. Set this field explicitly. Allowed values：1:1 / 9:16 / 16:9 / 3:4 / 4:3 / 3:2 / 2:3 / 5:4 / 4:5 / 21:9 / auto。 示例：1:1。
  input.image_sizestringNoThe aspect ratio of the generated image (this parameter has been replaced by aspect_ratio; please use the latest aspect_ratio parameter). Default："1:1"。 Allowed values：1:1 / 9:16 / 16:9 / 3:4 / 4:3 / 3:2 / 2:3 / 5:4 / 4:5 / 21:9 / auto。 示例：1:1。

Request Example ​

bash
curl -X POST "https://ai.modelfold.online/v1/jobs/createTask" \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "google/nano-banana-edit",
  "callBackUrl": "https://your-domain.com/api/callback",
  "input": {
    "prompt": "turn this photo into a character figure. Behind it, place a box with the character’s image printed on it, and a computer showing the Blender modeling process on its screen. In front of the box, add a round plastic base with the character figure standing on it. set the scene indoors if possible",
    "image_urls": [
      "https://file.aiquickdraw.com/custom-page/akr/section-images/1756223420389w8xa2jfe.png"
    ],
    "output_format": "png",
    "aspect_ratio": "1:1"
  }
}'
json
{
  "model": "google/nano-banana-edit",
  "callBackUrl": "https://your-domain.com/api/callback",
  "input": {
    "prompt": "turn this photo into a character figure. Behind it, place a box with the character’s image printed on it, and a computer showing the Blender modeling process on its screen. In front of the box, add a round plastic base with the character figure standing on it. set the scene indoors if possible",
    "image_urls": [
      "https://file.aiquickdraw.com/custom-page/akr/section-images/1756223420389w8xa2jfe.png"
    ],
    "output_format": "png",
    "aspect_ratio": "1:1"
  }
}

Response ​

200 — Request successful ​

json
{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "task_google_1765178615729"
  }
}

500 — Server error. ​

参数类型必填说明
codeinteger是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
- 408: Timeout - No result has been returned for over 10 minutes.
- 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
msgstring是Response message, error description when failed
dataobject是—
json
{
  "code": 500,
  "msg": "Server Error - An unexpected error occurred while processing the request",
  "data": null
}

Callback ​

onImageGenerated ​

Callback URL: {$request.body#/callBackUrl} (the callBackUrl in the request body).

Sent when the task succeeds or fails.

Callback body parameters

参数类型必填说明
codeinteger否200: success. 501: failure; see data.failCode and data.failMsg. Allowed values：200 / 501。 示例：200。
msgstring否Status message 示例：Playground task completed successfully.。
dataobject否—
  data.completeTimeinteger否Task completion time, represented as a Unix timestamp in milliseconds 示例：1786428283000。
  data.costTimeinteger否Processing time in seconds. Present on both success and failure callbacks. 示例：61。
  data.createTimeinteger否Task creation time, represented as a Unix timestamp in milliseconds 示例：1786428202000。
  data.creditsConsumednumber否Credits consumed by the task; 0 for failed tasks. 示例：3。
  data.modelstring否Image editing model used for the task 示例：google/nano-banana-edit。
  data.paramstring否Parameters submitted when creating the task, in JSON string format 示例：{"input":"{\"output_format\":\"png\",\"aspect_ratio\":\"1:1\",\"image_urls\":[\"https://file.aiquickdraw.com/custom-page/akr/section-images/1756223420389w8xa2jfe.png\"],\"prompt\":\"Convert this photo into a character figurine. Place a packaging box featuring the character's image behind the figurine, with a computer beside it displaying the Blender modeling process on its screen. Add a round plastic base in front of the packaging box and position the character figurine standing on the base. Set the scene in an indoor environment whenever possible.\"}","callBackUrl":"https://your-domain.com/api/callback","model":"google/nano-banana-edit"}。
  data.resultJsonstring否Image generation result in JSON string format. resultUrls contains the list of generated image URLs. Present only when state is success. 示例：{"resultUrls":["https://tempfile.aiquickdraw.com/p/bf5a824ce79d693a2a876fb2a8ff9851_1_1786428282_8210.png"]}。
  data.statestring否Task status Allowed values：success / fail。 示例：success。
  data.taskIdstring否Task ID 示例：bf5a824ce79d693a2a876fb2a8ff9851。
  data.updateTimeinteger否Use completeTime as the completion time; updateTime may equal createTime. 示例：1786428283000。
  data.failCodestring否Failure code, a numeric string such as "400" or "500". Present only when state is fail. 示例：500。
  data.failMsgstring否Failure reason. Present only when state is fail. 示例：&lt;error detail&gt;。

Success

json
{
  "code": 200,
  "msg": "Playground task completed successfully.",
  "data": {
    "taskId": "bf5a824ce79d693a2a876fb2a8ff9851",
    "model": "google/nano-banana-edit",
    "state": "success",
    "param": "{\"input\":\"{\\\"output_format\\\":\\\"png\\\",\\\"aspect_ratio\\\":\\\"1:1\\\",\\\"image_urls\\\":[\\\"https://file.aiquickdraw.com/custom-page/akr/section-images/1756223420389w8xa2jfe.png\\\"],\\\"prompt\\\":\\\"Convert this photo into a character figurine. Place a packaging box featuring the character's image behind the figurine, with a computer beside it displaying the Blender modeling process on its screen. Add a round plastic base in front of the packaging box and position the character figurine standing on the base. Set the scene in an indoor environment whenever possible.\\\"}\",\"callBackUrl\":\"https://your-domain.com/api/callback\",\"model\":\"google/nano-banana-edit\"}",
    "resultJson": "{\"resultUrls\":[\"https://tempfile.aiquickdraw.com/p/bf5a824ce79d693a2a876fb2a8ff9851_1_1786428282_8210.png\"]}",
    "completeTime": 1786428283000,
    "createTime": 1786428202000,
    "costTime": 61,
    "creditsConsumed": 3,
    "updateTime": 1786428283000
  }
}

Failure

json
{
  "code": 501,
  "msg": "Playground task failed.",
  "data": {
    "taskId": "bf5a824ce79d693a2a876fb2a8ff9851",
    "model": "google/nano-banana-edit",
    "state": "fail",
    "param": "{\"input\":\"{\\\"output_format\\\":\\\"png\\\",\\\"aspect_ratio\\\":\\\"1:1\\\",\\\"image_urls\\\":[\\\"https://file.aiquickdraw.com/custom-page/akr/section-images/1756223420389w8xa2jfe.png\\\"],\\\"prompt\\\":\\\"Convert this photo into a character figurine. Place a packaging box featuring the character's image behind the figurine, with a computer beside it displaying the Blender modeling process on its screen. Add a round plastic base in front of the packaging box and position the character figurine standing on the base. Set the scene in an indoor environment whenever possible.\\\"}\",\"callBackUrl\":\"https://your-domain.com/api/callback\",\"model\":\"google/nano-banana-edit\"}",
    "failCode": "500",
    "failMsg": "<error detail>",
    "completeTime": 1786428283000,
    "createTime": 1786428202000,
    "costTime": 61,
    "creditsConsumed": 0,
    "updateTime": 1786428283000
  }
}

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