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

# 生成歌词

> Flow Music 根据提示词生成歌词。结果可回填到生成音乐接口的 lyrics 字段

```bash cURL theme={null}
curl --request POST \
  --url https://api.apimart.ai/v1/music/generations/lyricsFlowMusic \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "flowmusic",
    "prompt": "一首关于坚持的摇滚歌曲"
  }'
```

```python Python theme={null}
import requests

url = "https://api.apimart.ai/v1/music/generations/lyricsFlowMusic"

payload = {
    "model": "flowmusic",
    "prompt": "一首关于坚持的摇滚歌曲"
}

headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
```

```javascript JavaScript theme={null}
const url = "https://api.apimart.ai/v1/music/generations/lyricsFlowMusic";

const payload = {
  model: "flowmusic",
  prompt: "一首关于坚持的摇滚歌曲"
};

const headers = {
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
};

fetch(url, {
  method: "POST",
  headers: headers,
  body: JSON.stringify(payload)
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));
```

```json 200 theme={null}
{
  "code": 200,
  "data": [
    {
      "status": "submitted",
      "task_id": "task_01KWXVCX91HYHSTHZ0NC1SRFW1"
    }
  ]
}
```

```json 400 theme={null}
{
  "error": {
    "message": "model is required",
    "type": "invalid_request",
    "param": "",
    "code": "model_required"
  }
}
```

```json 403 theme={null}
{
  "error": {
    "message": "余额不足",
    "type": "invalid_request",
    "param": "",
    "code": "quota_not_enough"
  }
}
```

```json 429 theme={null}
{
  "error": {
    "message": "当前分组容量饱和，请稍后重试",
    "type": "rate_limit_error",
    "param": "",
    "code": "rate_limit_error"
  }
}
```

## 认证

**Authorization** `string` *required*

所有接口均需要使用 Bearer Token 进行认证

获取 API Key：

访问 [API Key 管理页面](https://apimart.ai/keys) 获取您的 API Key

使用时在请求头中添加：

```
Authorization: Bearer YOUR_API_KEY
```

## 请求参数

**model** `string` *required*

模型名称，**固定传 `"flowmusic"`**（大小写不敏感）

**prompt** `string` *required*

生成歌词的提示词，**≤ 3000 字符**

建议描述歌曲主题、风格、情绪等，以获得更贴合的歌词

示例：`"一首关于坚持的摇滚歌曲"`

## 响应

**code** `integer`

响应状态码，成功时为 200

**data** `array`

返回数据数组

**数组元素**

**status** `string`

任务状态，初始提交时为 `submitted`

**task\_id** `string`

任务唯一标识符，用于查询任务状态和结果

## 使用场景

### 场景 1：按主题生成歌词

```json theme={null}
{
  "model": "flowmusic",
  "prompt": "一首关于坚持的摇滚歌曲"
}
```

### 场景 2：歌词回填成曲

先生成歌词，完成后取 `result.lyrics[0]` 的 `title` 和 `lyrics`，回填到[生成音乐](/cn/api-reference/audios/flow-music/music.md)接口：

```json theme={null}
{
  "model": "flowmusic",
  "title": "坚持",
  "lyrics": "[Verse 1]\n黑夜再长也会天亮\n...",
  "sound_prompt": "energetic rock with electric guitar"
}
```

> [!NOTE]
>
> **查询任务结果**
>
> 歌词生成为异步任务，提交后会返回 `task_id`。使用 [获取任务状态](/cn/api-reference/audios/flow-music/query.md) 接口查询生成进度和结果。

## 任务完成结果示例

**查询返回示例**（`GET /v1/music/tasks/{task_id}`）：

```json theme={null}
{
  "code": 200,
  "data": {
    "id": "task_01KWXVCX91HYHSTHZ0NC1SRFW1",
    "status": "completed",
    "progress": 100,
    "created": 1783413241,
    "completed": 1783413284,
    "actual_time": 43,
    "cost": 0.016,
    "credits_cost": 0.16,
    "result": {
      "lyrics": [
        {
          "title": "Bleached",
          "lyrics": "[Intro]\n(Check)\n(One two)\n\n[Verse 1]\nThe birds are..."
        }
      ]
    }
  }
}
```


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