> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crazyrouter.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Callback 协议

> 异步任务的 Webhook 回调协议

> 更新日期：2026-06-06

## 概述

对于异步任务（Midjourney 绘图、视频生成、音乐生成等），Crazyrouter 支持通过 Webhook 回调通知任务状态变更。

## 回调 URL 配置

在提交任务时，通过 `notifyHook` 参数指定回调地址：

```json theme={null}
{
  "prompt": "a beautiful sunset",
  "notifyHook": "https://your-server.com/api/callback"
}
```

## 回调请求格式

Crazyrouter 会向你的回调 URL 发送 POST 请求：

```
POST https://your-server.com/api/callback
Content-Type: application/json
```

### Midjourney 回调

```json theme={null}
{
  "id": "task_abc123",
  "action": "IMAGINE",
  "status": "SUCCESS",
  "prompt": "a beautiful sunset",
  "imageUrl": "https://cdn.example.com/image.png",
  "progress": "100%",
  "failReason": "",
  "submitTime": 1706000000000,
  "startTime": 1706000010000,
  "finishTime": 1706000060000
}
```

### 视频生成回调（Kling/Luma/Runway）

```json theme={null}
{
  "id": "task_xyz789",
  "status": "succeed",
  "type": "video",
  "output": {
    "video_url": "https://cdn.example.com/video.mp4",
    "cover_url": "https://cdn.example.com/cover.jpg",
    "duration": 5.0
  },
  "created_at": 1706000000,
  "updated_at": 1706000120
}
```

### Suno 音乐回调

```json theme={null}
{
  "id": "task_music456",
  "status": "complete",
  "output": {
    "audio_url": "https://cdn.example.com/song.mp3",
    "title": "My Song",
    "duration": 180
  }
}
```

## 回调状态流转

```
提交 → NOT_START → IN_PROGRESS → SUCCESS / FAILURE
```

每次状态变更都会触发一次回调。

## 回调服务端示例

<CodeGroup>
  ```python Python (Flask) theme={null}
  from flask import Flask, request, jsonify

  app = Flask(__name__)

  @app.route("/api/callback", methods=["POST"])
  def callback():
      data = request.json
      task_id = data["id"]
      status = data["status"]

      print(f"任务 {task_id} 状态更新: {status}")

      if status == "SUCCESS":
          image_url = data.get("imageUrl")
          print(f"图片地址: {image_url}")

      return jsonify({"success": True})

  app.run(port=8080)
  ```

  ```javascript Node.js (Express) theme={null}
  const express = require('express');
  const app = express();
  app.use(express.json());

  app.post('/api/callback', (req, res) => {
    const { id, status, imageUrl } = req.body;
    console.log(`任务 ${id} 状态: ${status}`);

    if (status === 'SUCCESS') {
      console.log(`图片: ${imageUrl}`);
    }

    res.json({ success: true });
  });

  app.listen(8080);
  ```
</CodeGroup>

<Warning>
  回调 URL 必须是公网可访问的地址。请确保你的服务器能接收 POST 请求，并在 5 秒内返回 200 状态码。
</Warning>

<Note>
  如果回调失败，系统会重试最多 3 次，间隔分别为 10 秒、30 秒、60 秒。
</Note>