# ElevenLabs Voice Changer — API Reference

Model ID: `model_elevenlabs-voice-changer`

---

## Authentication

- **API_KEY** and **API_SECRET** are found in your [Scenario Project Settings](https://app.scenario.com/team&tab=api_keys) under API Keys.
- Set them as environment variables `SCENARIO_SDK_API_KEY` and `SCENARIO_SDK_API_SECRET` — both SDKs pick them up by default.
- For raw HTTP (cURL), use Basic Auth: `Authorization: Basic base64("<API_KEY>:<API_SECRET>")`.

### Install the SDK

- JavaScript / TypeScript: `npm install @scenario-labs/sdk`
- Python: `pip install scenario-sdk`

---

## Generate

**Endpoint:** `POST https://api.cloud.scenario.com/v1/generate/custom/model_elevenlabs-voice-changer`

### Parameters

| Parameter | Type | Required | Default | Description |
|-----------|------|----------|---------|-------------|
| `audio` | assetId | yes | - | The audio file you want to transform. The words, timing, and emotion are kept. Only the voice itself changes. Audio file should be less than 5 minutes long. |
| `voiceId` | model | - | `` | The voice you want the recording to sound like. Pick one of your own cloned ElevenLabs voices |
| `publicVoice` | string | - | `Adam` | One of ElevenLabs' ready-made voices to use as the target. Ignored if you've selected your own Voice above. Ignored if the input Voice is set. |
| `fileFormat` | string | - | `other` | The format of the file you upload. Choose 'Encoded' for common files like MP3 or WAV. 'PCM' is a raw audio format that's slightly faster to process if your file already uses it. |
| `removeBackgroundNoise` | boolean | - | `false` | Cleans up background noise in your recording before converting it. Useful for noisy or low-quality audio. |
| `stability` | number | - | - | Controls how steady the voice sounds. Higher values keep it calm and consistent; lower values make it more varied and expressive. Leave empty to use the voice's own setting. |
| `similarityBoost` | number | - | - | How closely the result should match the target voice. Higher values stick to it more tightly. Leave empty to use the voice's own setting. |
| `styleExaggeration` | number | - | - | How much to amplify the target voice's style and emotion. Higher values are more expressive but can make the voice less steady. Leave empty to use the voice's own setting. |
| `useSpeakerBoost` | boolean | - | - | Makes the result sound more like the chosen voice, at the cost of slightly slower processing. Leave empty to use the voice's own setting. |
| `outputFormat` | string | - | `mp3_44100_128` | The format and quality of the audio you get back. Higher numbers mean better quality and larger files. |
| `seed` | number | - | - | An optional number that locks in the result. Reusing the same seed with the same settings produces the same audio every time; leave it empty for a fresh result on each run. |

### Example Requests

**cURL**

```bash
curl -X POST "https://api.cloud.scenario.com/v1/generate/custom/model_elevenlabs-voice-changer" \
  -H "Authorization: Basic $(echo -n '<API_KEY>:<API_SECRET>' | base64)" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'EOF'
{
  "audio": "<asset_id>",
  "publicVoice": "Adam",
  "fileFormat": "other",
  "removeBackgroundNoise": false,
  "outputFormat": "mp3_44100_128"
}
EOF
```

**Python**

```python
import os
from scenario_sdk import Scenario

client = Scenario(
    api_key=os.environ.get("SCENARIO_SDK_API_KEY"),
    api_secret=os.environ.get("SCENARIO_SDK_API_SECRET"),
)

body = {
    "audio": "<asset_id>",
    "publicVoice": "Adam",
    "fileFormat": "other",
    "removeBackgroundNoise": False,
    "outputFormat": "mp3_44100_128"
}

response = client.generate.run_model(
    model_id="model_elevenlabs-voice-changer",
    body=body,
)
print(response)
```

**JavaScript**

```javascript
import Scenario from "@scenario-labs/sdk";

const client = new Scenario({
  apiKey: process.env["SCENARIO_SDK_API_KEY"],
  apiSecret: process.env["SCENARIO_SDK_API_SECRET"],
});

const body = {
  "audio": "<asset_id>",
  "publicVoice": "Adam",
  "fileFormat": "other",
  "removeBackgroundNoise": false,
  "outputFormat": "mp3_44100_128"
};

const response = await client.generate.runModel("model_elevenlabs-voice-changer", { body });
console.info(response);
```

---

## Retrieve Results

After submitting a generation request, you receive a `jobId`. Poll the job until `job.status` is `"success"`. The generated asset IDs are in `job.metadata.assetIds`.

**Endpoint:** `GET https://api.cloud.scenario.com/v1/jobs/{jobId}`

### Example Requests

**cURL**

```bash
curl -X GET "https://api.cloud.scenario.com/v1/jobs/<JOB_ID>" \
  -H "Authorization: Basic $(echo -n '<API_KEY>:<API_SECRET>' | base64)"
```

**Python**

```python
job = client.jobs.retrieve(job_id="<JOB_ID>")
print(job.status)
print(job.metadata.asset_ids)
```

**JavaScript**

```javascript
// Option 1 — wait on the response from runModel using the SDK helper
const completed = await response.job.wait();
console.info(completed.status);
console.info(completed.metadata?.assetIds);

// Option 2 — retrieve a job by its ID
const job = await client.jobs.retrieve("<JOB_ID>");
console.info(job.status);
console.info(job.metadata?.assetIds);
```

**Example response:**

```json
{
  "job": {
    "jobId": "job_abc123",
    "status": "success",
    "metadata": {
      "assetIds": [
        "asset_abc123"
      ]
    }
  }
}
```

> **Important:** Generated asset URLs are **temporary** and expire after a short period. Download and store any images you wish to keep before the URL expires. More info: [Content Delivery Network (CDN)](https://docs.scenario.com/get-started/documentation/content-delivery-network-cdn).

---

*Generated by [Scenario](https://app.scenario.com)*