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 gpt-image-2-generation, 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.
Image Generation Models
GPT Image 2 Generation MCP Tool
Generate ecommerce images with the GPT Image 2 model and optional quality control. The model is fixed by this API, so provider must not be supplied in the request.
MCP tool name
nexscope_gpt_image_2_generationLegacy 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": "gpt-image-2-generation-1",
"method": "tools/call",
"params": {
"name": "nexscope_gpt_image_2_generation",
"arguments": {
"imageUrls": [],
"prompt": "Keep the product consistent and generate a clean white-background ecommerce hero image.",
"outputNum": 1,
"resolution": "1K",
"aspectRatio": "1:1",
"quality": "medium"
}
}
}Legacy endpoint
POST /api/skill-api/v1/mcpCanonical detail URL
https://www.nexscope.ai/mcp-map/gpt-image-2-generationAsynchronous 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": "gpt-image-2-generation-result-1",
"method": "tools/call",
"params": {
"name": "nexscope_media_task_result",
"arguments": {
"skillSlug": "gpt-image-2-generation",
"taskId": "TASK_ID_FROM_THE_GENERATION_RESULT"
}
}
}REST fallback
GET https://api.nexscope.ai/api/skill-api/v1/skills/gpt-image-2-generation/tasks/{taskId}Arguments
| Name | Type | Required | Meaning |
|---|---|---|---|
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. Available options
Example: 1K |
aspectRatio | string | optional | Output aspect ratio. Available options
Example: 1:1 |
quality | string | optional | GPT Image quality. Defaults to medium. Available options
Example: medium |
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
{
"imageUrls": [],
"prompt": "Keep the product consistent and generate a clean white-background ecommerce hero image.",
"outputNum": 1,
"resolution": "1K",
"aspectRatio": "1:1",
"quality": "medium"
}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
}