---
title: "Use Suno in OpenClaw via RunAPI — Music API Guide"
url: "https://runapi.ai/openclaw-suno.md"
canonical: "https://runapi.ai/openclaw-suno"
locale: "en"
model: "suno"
---

# Use Suno in OpenClaw.

Suno generates full songs — vocals, instruments, and mixing — from a text prompt or exact lyrics. Versions v4 through v5.5 are available through RunAPI, which provides API access since Suno has no official public API. OpenClaw agents call it with the same RUNAPI_API_KEY used for chat.

## API example

```bash
curl -X POST https://runapi.ai/api/v1/suno/text_to_music \
  -H "Authorization: Bearer $RUNAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "suno-v5.5",
    "vocal_mode": "auto_lyrics",
    "prompt": "An upbeat indie pop track about coding late at night, warm synths and acoustic guitar",
    "vocal_gender": "female"
  }'

```

### Response

```json
{
  "task_id": "tsk_abc123",
  "status": "pending",
  "model": "suno-v5.5"
}

```

## How it works

1. **Configure RunAPI** — Set RUNAPI_API_KEY in your environment. If you already configured RunAPI in OpenClaw for chat, the same key works for Suno music generation — no extra provider setup needed.
2. **Call text_to_music** — Send a POST to the text_to_music endpoint with the model and vocal_mode. Use auto_lyrics with a prompt for AI-written lyrics, exact_lyrics with lyrics/style/title for your own words, or instrumental with style/title for no vocals.
3. **Poll for the result** — The endpoint returns a task_id immediately. Song generation takes 30 seconds to several minutes depending on version. Poll the task status endpoint until the status is completed, then read the output audio URL.

## Parameters

| Parameter | Type | Description |
|-----------|------|-------------|
| `model` | `string` | Required. suno-v4, suno-v4.5, suno-v4.5-all, suno-v4.5-plus, suno-v5, or suno-v5.5. |
| `vocal_mode` | `string` | Required. auto_lyrics (AI writes lyrics from prompt), exact_lyrics (you provide lyrics/style/title), or instrumental (no vocals, requires style/title). |
| `prompt` | `string` | Song brief for auto_lyrics mode. Describe genre, mood, tempo, and subject. Forbidden in exact_lyrics and instrumental modes. |
| `lyrics` | `string` | Exact lyrics to sing. Required for exact_lyrics mode. Forbidden in auto_lyrics and instrumental modes. |
| `style` | `string` | Music style description, e.g. lo-fi hip hop, 80s synthwave. Required for exact_lyrics and instrumental modes. |
| `title` | `string` | Song title. Required for exact_lyrics and instrumental modes. |
| `vocal_gender` | `string` | Optional. male or female. |
| `negative_tags` | `string` | Optional. Styles to avoid, e.g. heavy metal, screaming. |
| `duration_seconds` | `integer` | Optional. Target duration in seconds. |
| `persona_id` | `string` | Optional. Persona ID for custom voice or style profiles. |
| `persona_type` | `string` | Optional. style or voice. Selects the persona category. |
| `callback_url` | `string` | Optional. Webhook URL that receives a POST when the task completes. |

## FAQ

### How do I write better Suno prompts to get the genre and style I want?

Be specific about genre, mood, tempo, and instrumentation in your prompt. For example, "upbeat 120 BPM indie pop with acoustic guitar and warm synths" works better than "happy song." Use negative_tags to exclude unwanted elements like "heavy metal" or "screaming." Meta tags in the prompt help Suno understand structure.

### Which Suno version should I use -- v4, v5, or v5.5?

suno-v5.5 is the latest and produces the highest quality output with better vocal clarity and mixing. suno-v4 and suno-v4.5 are cheaper and faster for draft iterations. All versions use the same text_to_music endpoint and parameters.

### Can I extend a Suno song beyond the initial clip length?

Yes. Use the extend_music endpoint to continue a song from a specific timestamp. You can chain multiple extensions to build longer tracks. RunAPI also offers cover_audio to restyle existing tracks and create_mashup to combine elements from multiple songs.

### Does RunAPI provide an official Suno API?

Suno does not offer a public API. RunAPI provides programmatic access to Suno v4 through v5.5 through the same API key and task lifecycle used for all other RunAPI models. No Suno account or separate credentials needed.

### Can I control the voice gender and style weight?

Yes. Set vocal_gender to male or female. Use negative_tags to exclude unwanted styles. For finer control, create a persona through the generate_persona endpoint and pass the returned persona_id with persona_type set to voice or style.


## Links

- [OpenClaw setup guide →](https://runapi.ai/openclaw)
- [Suno on RunAPI →](https://runapi.ai/models/suno)
- [Model catalog](https://runapi.ai/models)
- [API docs](https://runapi.ai/docs)