IMPORTANT ASYNCHRONOUS TASK WORKFLOW
- Call this MCP generation tool once and read taskId from structuredContent.
- Do not call generation again while pending or running.
- Query nexscope_media_task_result with this skill slug, the exact taskId, and the same bearer credential using progressive backoff.
Multimodal AI
Smart Image Outpainting API
Expand an image canvas with AI.
MCP tool name
nexscope_smart_image_outpaintingMCP endpoint
https://api.nexscope.ai/mcpJSON-RPC method
tools/callAuthentication
Use OAuth 2.1 Authorization Code with PKCE and the mcp:tools scope. API keys remain supported as a compatibility option.
Authorization: Bearer nk-xxxxxxxxxxxxxxxxxIf 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": "smart-image-outpainting-1",
"method": "tools/call",
"params": {
"name": "nexscope_smart_image_outpainting",
"arguments": {
"height": 900,
"imageUrl": "https://example.com/product.jpg",
"outputNum": 1,
"prompt": "extend the clean studio background",
"width": 1200
}
}
}MCP 2025-11-25 · Streamable HTTPProgress 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": "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"
}
}
}Arguments
| Name | Type | Required | Description |
|---|---|---|---|
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 |
|---|---|---|---|
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. |
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
{
"height": 900,
"imageUrl": "https://example.com/product.jpg",
"outputNum": 1,
"prompt": "extend the clean studio background",
"width": 1200
}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"
}