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

# Prompt & Vocal Tools

> Free Suno helpers: enhance a style prompt before generating, or isolate the vocals from a clip. See parameters, response fields, and API examples.

Two free helpers that fit around generation.

## Models

| Model                    | What it does                                            |
| ------------------------ | ------------------------------------------------------- |
| `suno-ai/enhance-prompt` | Rewrites a short style description into a richer prompt |
| `suno-ai/vox`            | Isolates the vocals from a time range of a clip         |

## Enhance Prompt

Model: `suno-ai/enhance-prompt`

| Parameter | Type   | Required | Description                  |
| --------- | ------ | -------- | ---------------------------- |
| `prompt`  | string | Yes      | Style description to enhance |

```bash theme={null}
curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "suno-ai/enhance-prompt",
    "input": {
      "prompt": "lofi"
    }
  }'
```

The completed task returns `prompt` with the enhanced text. Pass it as `tags` to [Music Generation](/models/audio/suno/music).

## Extract Vocals

Model: `suno-ai/vox`

| Parameter       | Type   | Required | Description                                        |
| --------------- | ------ | -------- | -------------------------------------------------- |
| `clip_id`       | string | Yes      | Clip to isolate vocals from                        |
| `vocal_start_s` | number | No       | Start of the vocal region in seconds. Default: `0` |
| `vocal_end_s`   | number | Yes      | End of the vocal region in seconds                 |

```bash theme={null}
curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "suno-ai/vox",
    "input": {
      "clip_id": "1901ec96-72c6-4c26-8e56-91028ca6070d",
      "vocal_start_s": 45,
      "vocal_end_s": 74
    }
  }'
```

The completed task returns `vox_audio_id`, `source_clip_id`, `vocal_start_s`, and `vocal_end_s`.

## Response

```json theme={null}
{
  "code": 200,
  "success": true,
  "data": {
    "task_id": "abc123def456",
    "status": "processing"
  }
}
```

<Note>
  **Volume discounts** are available for almost all models. Reach out at [contact@unifically.com](mailto:contact@unifically.com) to discuss custom pricing.
</Note>