Nano Banana 2.1 Image Generation

Generate and edit ecommerce images with Nano Banana 2.1, with improved text layout and consistency across editing rounds. Available via REST API or MCP.

CostEst. 93–112 credits / call

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POST · https://api.nexscope.ai/image/banana21ImageGenerationMCP · nexscope_banana_2_1_image_generation

Subscription required. Creative AI APIs are available only to users with an active subscription. Trial credits do not enable API key access. View subscription plans.

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Image Generation Models

What this API does

Generate and edit ecommerce images with Nano Banana 2.1, with improved text layout and consistency across editing rounds. The request accepts imageUrls, prompt, outputNum, resolution, aspectRatio. Generation runs as a task: retain the task ID and retrieve the completed result before using the output.

Nano Banana 2.1 Image Generation API use cases

Create a product hero image

To create a product hero image, a content editor submits imageUrls and prompt to Nano Banana 2.1 Image Generation. The returned completed generation results help select a composition for the product hero placement.

Explore campaign image concepts

A content editor uses Nano Banana 2.1 Image Generation with imageUrls and prompt to explore campaign image concepts. The returned completed generation results help compare concepts against the campaign creative brief.

Adapt reference images for a listing

For this workflow, a content editor calls Nano Banana 2.1 Image Generation with imageUrls and prompt to adapt reference images for a listing. The result helps check reference product consistency in the generated image.

Nano Banana 2.1 Image Generation API FAQ

What does the Nano Banana 2.1 Image Generation API return?

Generate and edit ecommerce images with Nano Banana 2.1, with improved text layout and consistency across editing rounds. It corresponds to the supplied imageUrls, prompt, outputNum, resolution, aspectRatio. The initial response can contain a task ID and status; the completed task result contains the generated output. Example values illustrate the response shape, rather than live account results.

How many credits does the Nano Banana 2.1 Image Generation API cost?

The current documented cost is Est. 93–112 credits / call. This is the same cost shown at the top of this page. If a range or estimate is displayed, the final charge depends on the request. Review your available credits and the pricing page before calling the API, and check API usage records for the actual charge.

How do I call the Nano Banana 2.1 Image Generation API from my app or an MCP client?

Send a POST request to https://api.nexscope.ai/image/banana21ImageGeneration with your API key as a Bearer token and the JSON inputs shown in API integration. In a compatible MCP client such as Claude or Cursor, connect Nexscope and call nexscope_banana_2_1_image_generation. Use the MCP arguments shown in the MCP guide, or switch Online test to MCP to review its request before adding it to your app.

View plans and credits Connect this API with MCP

Try this API

Endpoint

https://api.nexscope.ai/image/banana21ImageGeneration

MCP method

nexscope_banana_2_1_image_generation

Step 1 of 3 · Authenticate

Authentication

All run endpoints require a user API key. Send it as a bearer token in the Authorization header.

Authorization: Bearer nk-xxxxxxxxxxxxxxxxx

Missing or invalid API keys return an authentication error. Manage keys from .

Step 2 of 3 · Send a request

POSThttps://api.nexscope.ai/image/banana21ImageGeneration

Run an API

Generate and edit ecommerce images with Nano Banana 2.1, with improved text layout and consistency across editing rounds.

Example request

Replace YOUR_API_KEY, then run this command in your terminal.

curl -X POST 'https://api.nexscope.ai/image/banana21ImageGeneration' \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "aspectRatio": "1:1",
  "imageUrls": [],
  "outputNum": 1,
  "prompt": "Keep the product consistent and generate a clean white-background ecommerce hero image.",
  "resolution": "1K"
}'

Step 3 of 3 · Inspect the result

Check the response

Read code for the request status and data for the result. Open the parameter and response reference for the full field definitions.

HTTP status codes

Code	Description
200	HTTP request completed. Check JSON code; only 0 indicates business success or acceptance.
400	Request JSON or required API parameters are invalid.
401	API key is missing, invalid, or cannot be matched to a user.
5xx	API execution or upstream service failed.

View parameters & response Try online

All categories/ Image Generation Models

POSThttps://api.nexscope.ai/image/banana21ImageGeneration

Run this API

Send a JSON request to execute this API and receive the documented response payload.

Open tester

Endpoint

Method	`POST`
Path	`https://api.nexscope.ai/image/banana21ImageGeneration`
Auth	`Bearer API key`
Content-Type	`application/json`

Request parameters

Name	Type	Required	Description
`imageUrls`	`array`	optional	Optional public reference image URLs. Omit this field for text-to-image generation, or provide references for image-to-image generation. When supplied, provide 1 to 14 JPG, PNG, or WEBP images; each image must not exceed 20 MB. Example: []
`prompt`	`string`	required	Generation prompt describing the target image, scene, composition, style, and constraints. Maximum 5000 characters. Example: Keep the product consistent and generate a clean white-background ecommerce hero image.
`outputNum`	`integer`	optional	Number of images to generate. Valid range: 1 to 10; defaults to 1. Example: 1
`resolution`	`string`	optional	Output resolution. Available options `1K` `2K` `4K; defaults to 1K` Example: 1K
`aspectRatio`	`string`	optional	Output aspect ratio. Available options `1:1` `16:9` `9:16` `3:4` `4:3` `3:2` `2:3` `4:5` `5:4` `21:9` Example: 1:1

Code example

{
  "aspectRatio": "1:1",
  "imageUrls": [],
  "outputNum": 1,
  "prompt": "Keep the product consistent and generate a clean white-background ecommerce hero image.",
  "resolution": "1K"
}

Response example

Platform response envelope. code 0 indicates success or acceptance; data contains the business result.

{
  "code": 0,
  "cost": "-1",
  "data": {
    "result": null,
    "status": "PENDING",
    "taskId": "example-task"
  },
  "msg": null,
  "time": "2026-01-01 00:00:00",
  "traceId": null,
  "ts": "0"
}

Response fields

Name	Type	Required	Description
`code`	`integer`	required	0 means accepted or successful; nonzero is a platform error.
`cost`	`string`	required	Elapsed milliseconds, never credits; -1 outside web requests.
`data`	`any`	required	Data value used by this API operation.
`msg`	`string \| null`	required	Msg value used by this API operation.
`time`	`string`	required	Server local time: yyyy-MM-dd HH:mm:ss.
`traceId`	`string \| null`	required	Trace id value used by this API operation.
`ts`	`string`	required	Epoch milliseconds.

Any of option 1 — requires taskId, status, result

Name	Type	Required	Description
`data`	`object`	required	Data value used by this API operation.
`data.result`	`any`	required	Result value used by this API operation.
`data.status`	`string`	required	Status value used by this API operation. Allowed: PENDING, RUNNING, SUCCEEDED, FAILED, TIMEOUT
`data.taskId`	`string`	required	Task id value used by this API operation.
`data.usage`	`object`	optional	Actual credits charged for a completed successful task; omitted when unavailable.
`data.usage.chargedCredits`	`integer`	required	Charged credits value used by this API operation. Minimum: 0

Any of option 1

Name	Type	Required	Description
`data.result`	`object`	required	Completed generation output retained from the task result. Fields vary by capability; generated resources use Nexscope-hosted URLs and any count represents charged Nexscope credits. This is the business output, not a task creation receipt.

Any of option 2

Name	Type	Required	Description
`data.result`	`null`	required	Result value used by this API operation.

Any of option 2

Name	Type	Required	Description
`data`	`null`	required	Data value used by this API operation.

Responses

Code	Description
200	HTTP request completed. Check JSON code; only 0 indicates business success or acceptance.
400	Request JSON or required API parameters are invalid.
401	API key is missing, invalid, or cannot be matched to a user.
5xx	API execution or upstream service failed.

Step 1 of 2 · Connect your MCP client

MCP

V2 recommended

Connect remote agents through the standard MCP 2025-11-25 Streamable HTTP endpoint. Use OAuth 2.1 Authorization Code with PKCE, or an API key for compatibility.

POST https://api.nexscope.ai/mcp
MCP-Protocol-Version: 2025-11-25
Content-Type: application/json

Authentication

OAuth clients request the mcp:tools scope. The endpoint's 401 response advertises protected-resource metadata for authorization discovery.

Step 2 of 2 · Call the tool

Call a tool

{
  "jsonrpc": "2.0",
  "id": "tool-call-1",
  "method": "tools/call",
  "params": {
    "name": "nexscope_banana_2_1_image_generation",
    "arguments": {
      "aspectRatio": "1:1",
      "imageUrls": [],
      "outputNum": 1,
      "prompt": "Keep the product consistent and generate a clean white-background ecommerce hero image.",
      "resolution": "1K"
    }
  }
}

Legacy MCP v1

Existing API-key clients can continue using the compatibility endpoint. New integrations should use MCP v2.

GET / POST /mcp/legacy

Online test

Execute the current API with your API key and JSON payload. Online tests use this site's configured API environment; the Endpoint and copyable examples use the public integration address.

Create an image

Prompt*0/5,000

Reference imagesOptional

JPG, PNG, WEBP · Up to 14 images · 20 MB each

0/14

Image settings

ImagesUp to 10

Resolution

Aspect ratio

API keys require an active subscription. Trial credits don't include API access. View plans.

Usage estimate unavailable

Final credits are shown with your result.

Preview

Your image will appear here

Recent generations

Saved in this browser for 24 hours

Your generations will appear here.

Test with an API key or MCP

Try it

Send a real request with the same contract shown in the reference.

Endpoint

/image/banana21ImageGeneration

Task result endpoint

/image/banana21ImageGeneration/tasks/{taskId}

MCP method

nexscope_banana_2_1_image_generation

API key*

JSON payload*

cURL

curl -X POST \
  https://api.nexscope.ai/image/banana21ImageGeneration \
  -H "Authorization: Bearer nk-..." \
  -H "Content-Type: application/json" \
  -d '{ "aspectRatio": "1:1", "imageUrls": [], "outputNum": 1, "prompt": "Keep the product consistent and generate a clean white-background ecommerce hero image.", "resolution": "1K" }'

Response

No response yet. Run the request to see the response here.

Task result

Results are checked automatically after Run request. You can also enter a task ID and check it manually; completed resources use Nexscope URLs and show actual charged credits.

Task ID

Result response

No task result yet. Query the task to see the generated output here.

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