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POST
/
api
/
v1
/
jobs
/
createTask
Generate images using flux-2/flex-text-to-image
curl --request POST \
  --url https://api.kie.ai/api/v1/jobs/createTask \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "flux-2/flex-text-to-image",
  "callBackUrl": "https://your-domain.com/api/callback",
  "input": {
    "prompt": "A humanoid figure with a vintage television set for a head, featuring a green-tinted screen displaying a `Hello FLUX.2` writing in ASCII font. The figure is wearing a yellow raincoat, and there are various wires and components attached to the television. The background is cloudy and indistinct, suggesting an outdoor setting",
    "aspect_ratio": "1:1",
    "resolution": "1K"
  }
}
'
{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "task_flux-2_1765175490366"
  }
}

​
查询任务状态

提交任务后，可通过统一的查询端点查看任务进度并获取生成结果：

获取任务详情

了解如何查询任务状态并获取生成结果
生产环境中，建议使用 callBackUrl 参数来接收生成完成的自动通知，而非轮询状态端点。

​
相关资源

市场概览

浏览所有可用模型

通用 API

查看账户积分与使用情况

Authorizations

​
Authorization
string
header
required

All APIs require authentication via Bearer Token.

Get API Key:

  1. Visit API Key Management Page to get your API Key

Usage: Add to request header: Authorization: Bearer YOUR_API_KEY

Note:

  • Keep your API Key secure and do not share it with others
  • If you suspect your API Key has been compromised, reset it immediately in the management page

Body

application/json
​
model
enum<string>
default:flux-2/flex-text-to-image
required

The model name to use for generation. Required field.

  • Must be flux-2/flex-text-to-image for this endpoint
可用选项:
flux-2/flex-text-to-image
Example:

"flux-2/flex-text-to-image"

​
callBackUrl
string<uri>

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
Example:

"https://your-domain.com/api/callback"

​
input
object

Input parameters for the generation task

Response

Request successful

​
code
enum<integer>

Response status code

  • 200: Success - Request has been processed successfully
  • 401: Unauthorized - Authentication credentials are missing or invalid
  • 402: Insufficient Credits - Account does not have enough credits to perform the operation
  • 404: Not Found - The requested resource or endpoint does not exist
  • 422: Validation Error - The request parameters failed validation checks
  • 429: Rate Limited - Request limit has been exceeded for this resource
  • 455: Service Unavailable - System is currently undergoing maintenance
  • 500: Server Error - An unexpected error occurred while processing the request
  • 501: Generation Failed - Content generation task failed
  • 505: Feature Disabled - The requested feature is currently disabled
可用选项:
200,
401,
402,
404,
422,
429,
455,
500,
501,
505
​
msg
string

Response message, error description when failed

Example:

"success"

​
data
object