Image Generation Models

Nano Banana Image Generation

Generate ecommerce images with the Nano Banana base image model. The model is fixed by this API, so provider must not be supplied in the request.

MCP tool name

nexscope_banana_image_generation

Legacy MCP endpoint

/api/skill-api/v1/mcp

JSON-RPC method

tools/call

Authentication

Send the user API key as a bearer token on every MCP JSON-RPC request.

Authorization: Bearer nk-xxxxxxxxxxxxxxxxx

If authentication is missing or invalid, ask the user to open API Access and copy a valid key before calling this tool.

Call this MCP tool

Use tools/call with the MCP tool name below. The arguments object should match the table on this page.

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

Legacy endpoint

POST /api/skill-api/v1/mcp

Canonical detail URL

https://www.nexscope.ai/mcp-map/banana-image-generation

Asynchronous task workflow

This capability uses a create-and-query flow. Creating the task and retrieving its final generated resources are two connected requests.

1. Create onceCall the MCP tool once and keep the returned taskId.
2. Query with backoffCall nexscope_media_task_result with this skill slug and task ID. Wait at least 5 seconds first; while pending or running, back off at 5, 10, 20, then 30-second intervals.
3. Use final resultStop at a terminal status. Successful results contain Nexscope resource URLs and the actual charged-credit count.

MCP task result call

{
  "jsonrpc": "2.0",
  "id": "banana-image-generation-result-1",
  "method": "tools/call",
  "params": {
    "name": "nexscope_media_task_result",
    "arguments": {
      "skillSlug": "banana-image-generation",
      "taskId": "TASK_ID_FROM_THE_GENERATION_RESULT"
    }
  }
}

REST fallback

GET https://api.nexscope.ai/api/skill-api/v1/skills/banana-image-generation/tasks/{taskId}

Arguments

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 10 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. Supported values: 1K only. 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

Response fields

Treat structuredContent as the programmatic API response payload.

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

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.

Any of option 1

Examples

Example arguments

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

Example structuredContent

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

Nano Banana Image Generation

Nano Banana Image Generation

Authentication

Call this MCP tool

Asynchronous task workflow

Arguments

Response fields

Any of option 1 — requires taskId, status, result

Any of option 1

Examples

Example arguments

Example structuredContent

Any of option 2

Any of option 2

IMPORTANT ASYNCHRONOUS TASK WORKFLOW

Nano Banana Image Generation

IMPORTANT ASYNCHRONOUS TASK WORKFLOW

Nano Banana Image Generation

Authentication

Call this MCP tool

Asynchronous task workflow

Arguments

Response fields

Any of option 1 — requires taskId, status, result

Any of option 1

Examples

Example arguments

Example structuredContent

Related MCP tools

Any of option 2

Any of option 2