Qwen - Image to Image

This page is generated from the upstream official OpenAPI documentation. Endpoints, parameters and examples match the official docs; brand and API domain are replaced with ModelFold.

Endpoint

POST /jobs/createTask

Full URL: https://ai.modelfold.online/v1/jobs/createTask

Authentication: every request must include the Authorization: Bearer <API_KEY> header.

Image generation by Qwen's advanced AI model

Query Task Status

After submitting a task, use the unified query endpoint to check progress and retrieve results:

Get Task Details — Learn how to query task status and retrieve generation results

TIP

For production use, we recommend using the callBackUrl parameter to receive automatic notifications when generation completes, rather than polling the status endpoint.

Market Overview — Explore all available models
Common API — Check credits and account usage

Request Parameters

Body (application/json)

Parameter	Type	Required	Description
`model`	`string`	Yes	The model name to use for generation. Required field. - Must be `qwen/image-to-image` for this endpoint Default：`"qwen/image-to-image"`。 Allowed values：`qwen/image-to-image`。示例：`qwen/image-to-image`。
`callBackUrl`	`string`	No	The URL to receive generation task completion updates. Optional but recommended for production use. - System will POST task status and results to this URL when generation completes - Callback includes generated content URLs and task information - Your callback endpoint should accept POST requests with JSON payload containing results - Alternatively, use the Get Task Details endpoint to poll task status - To ensure callback security, see Webhook Verification Guide for signature verification implementation 示例：`https://your-domain.com/api/callback`。
`input`	`object`	No	Input parameters for the generation task
`input.prompt`	`string`	Yes	The prompt to generate the image with (Max length: 5000 characters) 示例：`Change the season from winter to spring. Keep the same composition, with the cabin, lake, and mountains unchanged. Fill the scene with warmth and vitality using blooming flowers and lush greenery.`。
`input.image_url`	`string`	Yes	The reference image to guide the generation (File URL after upload, not file content; Accepted types: image/jpeg, image/png, image/webp; Max size: 10.0MB) 示例：`https://static.aiquickdraw.com/tools/example/1786021267002_2vLU3iDm.png`。
`input.strength`	`number`	No	Denoising strength. 1.0 = fully remake; 0.0 = preserve original (Min: 0, Max: 1, Step: 0.01) (step: 0.01) Default：`0.8`。示例：`0.8`。
`input.output_format`	`string`	No	The format of the generated image Default：`"png"`。 Allowed values：`png` / `jpeg`。示例：`png`。
`input.acceleration`	`string`	No	Acceleration level for image generation. Options: 'none', 'regular', 'high'. Higher acceleration increases speed. 'regular' balances speed and quality. 'high' is recommended for images without text Default：`"none"`。 Allowed values：`none` / `regular` / `high`。示例：`none`。
`input.negative_prompt`	`string`	No	The negative prompt for the generation (Max length: 500 characters) 示例：`blurry, ugly`。
`input.seed`	`integer`	No	The same seed and the same prompt given to the same version of the model will output the same image every time
`input.num_inference_steps`	`number`	No	The number of inference steps to perform (Min: 2, Max: 250, Step: 1) (step: 1) Default：`30`。示例：`30`。
`input.guidance_scale`	`number`	No	The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt when looking for a related image to show you (Min: 0, Max: 20, Step: 0.1) (step: 0.1) Default：`2.5`。示例：`2.5`。
`input.enable_safety_checker`	`boolean`	No	The safety checker is always enabled in Playground. It can only be disabled by setting false through the API. (Boolean value (true/false)) 示例：`true`。
`input.nsfw_checker`	`boolean`	No	Defaults to false. When false, no additional content filtering is applied and results are returned directly by the model.

Request Example

bash

curl -X POST "https://ai.modelfold.online/v1/jobs/createTask" \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "qwen/image-to-image",
  "callBackUrl": "https://your-domain.com/api/callback",
  "input": {
    "prompt": "Change the season from winter to spring. Keep the same composition, with the cabin, lake, and mountains unchanged. Fill the scene with warmth and vitality using blooming flowers and lush greenery.",
    "image_url": "https://static.aiquickdraw.com/tools/example/1786021267002_2vLU3iDm.png",
    "strength": 0.8,
    "output_format": "png",
    "acceleration": "none",
    "negative_prompt": "blurry, ugly",
    "num_inference_steps": 30,
    "guidance_scale": 2.5,
    "enable_safety_checker": true
  }
}'

json

{
  "model": "qwen/image-to-image",
  "callBackUrl": "https://your-domain.com/api/callback",
  "input": {
    "prompt": "Change the season from winter to spring. Keep the same composition, with the cabin, lake, and mountains unchanged. Fill the scene with warmth and vitality using blooming flowers and lush greenery.",
    "image_url": "https://static.aiquickdraw.com/tools/example/1786021267002_2vLU3iDm.png",
    "strength": 0.8,
    "output_format": "png",
    "acceleration": "none",
    "negative_prompt": "blurry, ugly",
    "num_inference_steps": 30,
    "guidance_scale": 2.5,
    "enable_safety_checker": true
  }
}

Response

200 — Request successful

json

{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "task_qwen_1765178156594"
  }
}

Callback

onImageGenerated

Callback URL: {$request.body#/callBackUrl} (the callBackUrl in the request body).

Sent when the task succeeds or fails.

Callback body parameters

参数	类型	必填	说明
`code`	`integer`	否	200: success. 501: failure; see data.failCode and data.failMsg. Allowed values：`200` / `501`。示例：`200`。
`msg`	`string`	否	Status message 示例：`Playground task completed successfully.`。
`data`	`object`	否	—
`data.completeTime`	`integer`	否	Task completion time, represented as a Unix timestamp in milliseconds 示例：`1786434631000`。
`data.costTime`	`integer`	否	Processing time in seconds. Present on both success and failure callbacks. 示例：`10`。
`data.createTime`	`integer`	否	Task creation time, represented as a Unix timestamp in milliseconds 示例：`1786434621000`。
`data.creditsConsumed`	`number`	否	Credits consumed by the task; 0 for failed tasks. 示例：`4`。
`data.model`	`string`	否	Image-to-image model used for the task 示例：`qwen/image-to-image`。
`data.param`	`string`	否	Parameters submitted when creating the task, in JSON string format 示例：{"input":"{\"enable_safety_checker\":true,\"acceleration\":\"none\",\"strength\":0.8,\"output_format\":\"png\",\"negative_prompt\":\"blurry, ugly\",\"image_url\":\"https://static.aiquickdraw.com/tools/example/1786021267002_2vLU3iDm.png\",\"guidance_scale\":2.5,\"prompt\":\"Change the season from winter to spring. Keep the same composition, with the cabin, lake, and mountains unchanged. Fill the scene with warmth and vitality using blooming flowers and lush greenery.\",\"num_inference_steps\":30}","callBackUrl":"https://your-domain.com/api/callback","model":"qwen/image-to-image"}。
`data.resultJson`	`string`	否	Image generation result in JSON string format. resultUrls contains the list of generated image URLs. Present only when state is success. 示例：`{"resultUrls":["https://tempfile.aiquickdraw.com/qwen-image/1786434629356-p5gtmeygqbk.png"]}`。
`data.state`	`string`	否	Task status Allowed values：`success` / `fail`。示例：`success`。
`data.taskId`	`string`	否	Task ID 示例：`1eafcc55dc4f627a9381fceedf8fa464`。
`data.updateTime`	`integer`	否	Use completeTime as the completion time; updateTime may equal createTime. 示例：`1786434631000`。
`data.failCode`	`string`	否	Failure code, a numeric string such as "400" or "500". Present only when state is fail. 示例：`500`。
`data.failMsg`	`string`	否	Failure reason. Present only when state is fail. 示例：`<error detail>`。

Success

json

{
  "code": 200,
  "msg": "Playground task completed successfully.",
  "data": {
    "taskId": "1eafcc55dc4f627a9381fceedf8fa464",
    "model": "qwen/image-to-image",
    "state": "success",
    "param": "{\"input\":\"{\\\"enable_safety_checker\\\":true,\\\"acceleration\\\":\\\"none\\\",\\\"strength\\\":0.8,\\\"output_format\\\":\\\"png\\\",\\\"negative_prompt\\\":\\\"blurry, ugly\\\",\\\"image_url\\\":\\\"https://static.aiquickdraw.com/tools/example/1786021267002_2vLU3iDm.png\\\",\\\"guidance_scale\\\":2.5,\\\"prompt\\\":\\\"Change the season from winter to spring. Keep the same composition, with the cabin, lake, and mountains unchanged. Fill the scene with warmth and vitality using blooming flowers and lush greenery.\\\",\\\"num_inference_steps\\\":30}\",\"callBackUrl\":\"https://your-domain.com/api/callback\",\"model\":\"qwen/image-to-image\"}",
    "resultJson": "{\"resultUrls\":[\"https://tempfile.aiquickdraw.com/qwen-image/1786434629356-p5gtmeygqbk.png\"]}",
    "completeTime": 1786434631000,
    "createTime": 1786434621000,
    "costTime": 10,
    "creditsConsumed": 4,
    "updateTime": 1786434631000
  }
}

Failure

json

{
  "code": 501,
  "msg": "Playground task failed.",
  "data": {
    "taskId": "1eafcc55dc4f627a9381fceedf8fa464",
    "model": "qwen/image-to-image",
    "state": "fail",
    "param": "{\"input\":\"{\\\"enable_safety_checker\\\":true,\\\"acceleration\\\":\\\"none\\\",\\\"strength\\\":0.8,\\\"output_format\\\":\\\"png\\\",\\\"negative_prompt\\\":\\\"blurry, ugly\\\",\\\"image_url\\\":\\\"https://static.aiquickdraw.com/tools/example/1786021267002_2vLU3iDm.png\\\",\\\"guidance_scale\\\":2.5,\\\"prompt\\\":\\\"Change the season from winter to spring. Keep the same composition, with the cabin, lake, and mountains unchanged. Fill the scene with warmth and vitality using blooming flowers and lush greenery.\\\",\\\"num_inference_steps\\\":30}\",\"callBackUrl\":\"https://your-domain.com/api/callback\",\"model\":\"qwen/image-to-image\"}",
    "failCode": "500",
    "failMsg": "<error detail>",
    "completeTime": 1786434631000,
    "createTime": 1786434621000,
    "costTime": 10,
    "creditsConsumed": 0,
    "updateTime": 1786434631000
  }
}

Qwen - Image to Image ​

Endpoint ​

Query Task Status ​

Related Resources ​

Request Parameters ​

Body (application/json) ​

Request Example ​

Response ​

200 — Request successful ​

Callback ​

onImageGenerated ​

Qwen - Image to Image

Endpoint

Query Task Status

Related Resources

Request Parameters

Body (application/json)

Request Example

Response

200 — Request successful

Callback

onImageGenerated