IMPORTANT ASYNCHRONOUS TASK WORKFLOW
- Call this MCP generation tool once and read taskId from structuredContent.
- Do not call the generation tool again while the task is PENDING or RUNNING.
- Wait at least 5 seconds, then call nexscope_media_task_result with skillSlug set to smart-image-outpainting, the exact taskId, and the same bearer API key. While the task remains PENDING or RUNNING, use 5, 10, 20, and 30-second progressive backoff. Never query more often than once every 5 seconds.
- Stop querying when the task succeeds or fails. On success, return the final Nexscope resource URLs and the returned count as the actual charged credits.
- Never invent a taskId and never expose internal provider names or provider resource URLs.
Multimodal AI
Smart Image Outpainting API MCP Tool
Generate an expanded image around the original content using target width, height, and optional prompt.
MCP tool name
nexscope_smart_image_outpaintingLegacy MCP endpoint
/api/skill-api/v1/mcpJSON-RPC method
tools/callAuthentication
Send the user API key as a bearer token on every MCP JSON-RPC request.
Authorization: Bearer nk-xxxxxxxxxxxxxxxxxIf 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": "smart-image-outpainting-1",
"method": "tools/call",
"params": {
"name": "nexscope_smart_image_outpainting",
"arguments": {
"imageUrl": "https://example.com/product.jpg",
"width": 1200,
"height": 900,
"prompt": "extend the clean studio background",
"outputNum": 1
}
}
}Legacy endpoint
POST /api/skill-api/v1/mcpCanonical detail URL
https://www.nexscope.ai/mcp-map/smart-image-outpaintingAsynchronous 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_resultwith 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": "smart-image-outpainting-result-1",
"method": "tools/call",
"params": {
"name": "nexscope_media_task_result",
"arguments": {
"skillSlug": "smart-image-outpainting",
"taskId": "TASK_ID_FROM_THE_GENERATION_RESULT"
}
}
}REST fallback
GET https://api.nexscope.ai/api/skill-api/v1/skills/smart-image-outpainting/tasks/{taskId}Arguments
| Name | Type | Required | Meaning |
|---|---|---|---|
imageUrl | string | required | Public URL of the image to expand. The image must be between 300 and 4096 pixels in both width and height, and its width-to-height ratio must be between 0.4 and 2.5. Example: https://example.com/product.jpg |
width | integer | required | Target output width in pixels. Example: 1200 |
height | integer | required | Target output height in pixels. Example: 900 |
prompt | string | optional | Optional prompt describing the extended scene. Example: extend the clean studio background |
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 |
|---|---|---|---|
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.taskId | string | required | Task id value used by this API operation. |
data.status | string | required | Status value used by this API operation. Allowed: PENDING, RUNNING, SUCCEEDED, FAILED, TIMEOUT |
data.result | any | required | Result value used by this API operation. |
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. |
Examples
Example arguments
{
"imageUrl": "https://example.com/product.jpg",
"width": 1200,
"height": 900,
"prompt": "extend the clean studio background",
"outputNum": 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
}