Multimodal AI

AI Model Swap API

Swap an ecommerce product image onto a target model.

MCP tool name

nexscope_ai_model_swap

MCP endpoint

https://api.nexscope.ai/mcp

JSON-RPC method

tools/call

Authentication

Use OAuth 2.1 Authorization Code with PKCE and the mcp:tools scope. API keys remain supported as a compatibility option.

Authorization: Bearer nk-xxxxxxxxxxxxxxxxx

If authentication fails, ask the user to open API Access and copy a valid key.

Call this MCP tool

Initialize an MCP 2025-11-25 Streamable HTTP session at https://api.nexscope.ai/mcp, then use tools/call.

{
  "jsonrpc": "2.0",
  "id": "ai-model-swap-1",
  "method": "tools/call",
  "params": {
    "name": "nexscope_ai_model_swap",
    "arguments": {
      "customNegPrompt": "blur, distorted hands",
      "customPrompt": "clean ecommerce catalog photo",
      "genOriRes": false,
      "imageSegUrl": "https://example.com/mask.png",
      "imageUrl": "https://example.com/source-image.jpg",
      "modelHeadImageUrl": "https://example.com/model-reference.jpg",
      "modelPrompt": "smile, slim",
      "outputNum": 1,
      "realModel": true,
      "sceneImgUrl": "https://example.com/scene.jpg",
      "sceneStrength": 0.7
    }
  }
}

MCP 2025-11-25 · Streamable HTTP

Progress is delivered on the original POST SSE response. GET SSE carries notifications; reconnecting must query existing asynchronous work rather than submit again.

Asynchronous task workflow

1. Create once
Keep the returned taskId.
2. Query with backoff
Use nexscope_media_task_result after 5 seconds, then 10, 20, and 30 seconds.
3. Use final result
Stop at success, failure, or timeout.

{
  "jsonrpc": "2.0",
  "id": "ai-model-swap-result-1",
  "method": "tools/call",
  "params": {
    "name": "nexscope_media_task_result",
    "arguments": {
      "skillSlug": "ai-model-swap",
      "taskId": "TASK_ID_FROM_THE_GENERATION_RESULT"
    }
  }
}

Arguments

Name	Type	Required	Description
`imageUrl`	`string`	required	Public URL of the source product or outfit image. The image must be up to 20 MB and between 385 and 8192 pixels in both width and height. Example: https://example.com/source-image.jpg
`modelHeadImageUrl`	`string`	required	Public URL of the target model head image. The image must be up to 5 MB and between 512 and 2048 pixels in both width and height. Example: https://example.com/model-reference.jpg
`imageSegUrl`	`string`	optional	Optional segmentation mask URL for the source image. Example: https://example.com/mask.png
`sceneImgUrl`	`string`	optional	Optional scene reference image URL. The image must be up to 10 MB and between 768 and 4096 pixels in both width and height. Example: https://example.com/scene.jpg
`sceneStrength`	`number`	optional	Scene reference strength from 0 to 1. Defaults to 0.7. Example: 0.7
`modelPrompt`	`string`	optional	Comma-separated model appearance terms, such as smile, laugh, sitting, lying, fat, plump, slim, sideways, profile, back, or bald. Example: smile, slim
`customPrompt`	`string`	optional	Positive generation prompt, up to 600 characters. Example: clean ecommerce catalog photo
`customNegPrompt`	`string`	optional	Negative prompt to avoid unwanted artifacts. Example: blur, distorted hands
`genOriRes`	`boolean`	optional	Whether to generate the original resolution. Defaults to false. Example: false
`realModel`	`boolean`	optional	Whether to prefer a realistic model style. Example: true
`outputNum`	`integer`	optional	Number of images to generate, from 1 to 4. Defaults to 1. Example: 1

Response fields

Treat structuredContent as the programmatic API response payload.

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	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.
`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	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`	`null`	required	Data value used by this API operation.

Examples

Example arguments

{
  "customNegPrompt": "blur, distorted hands",
  "customPrompt": "clean ecommerce catalog photo",
  "genOriRes": false,
  "imageSegUrl": "https://example.com/mask.png",
  "imageUrl": "https://example.com/source-image.jpg",
  "modelHeadImageUrl": "https://example.com/model-reference.jpg",
  "modelPrompt": "smile, slim",
  "outputNum": 1,
  "realModel": true,
  "sceneImgUrl": "https://example.com/scene.jpg",
  "sceneStrength": 0.7
}

Example structuredContent

{
  "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"
}

IMPORTANT ASYNCHRONOUS TASK WORKFLOW

AI Model Swap API

Authentication

Call this MCP tool

Asynchronous task workflow

Arguments

Response fields

Any of option 1 — requires taskId, status, result

Any of option 1

Any of option 2

Any of option 2

Examples

Example arguments

Example structuredContent

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