---
title: "Update voice preferences for a persona"
description: "Set the TTS provider, voice and language for this persona. A full\nreplace, not a merge — send all three fields. Returns the stored\npreferences."
---

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

Path: AI Gateway API › Voice

`PUT /v1/voice/preferences/{persona_id}`

Set the TTS provider, voice and language for this persona. A full
replace, not a merge — send all three fields. Returns the stored
preferences.

## Authentication

- `HTTPBearer`, http, header `Authorization`

## Path parameters

- `persona_id` (`put_voice_preferences.path.persona_id`; string, required) — Persona to scope voice preferences to
  - format `uuid`

## Header parameters

- `X-On-Behalf-Of` (`put_voice_preferences.header.X-On-Behalf-Of`; any of, optional)
  - any of: `string`, `null`
- `X-External-User-Id` (`put_voice_preferences.header.X-External-User-Id`; any of, optional)
  - any of: `string`, `null`
- `X-App-Id` (`put_voice_preferences.header.X-App-Id`; any of, optional)
  - any of: `string`, `null`

## Request body

_Required._

- `voice` (`put_voice_preferences.voice`; string, required) — Voice name for the provider
  - minLength 1
- `language` (`put_voice_preferences.language`; string, required) — BCP-47 language code
  - minLength 1
- `provider` (`put_voice_preferences.provider`; string, optional) — TTS provider
  - minLength 1; default `"gemini"`

## Example request

```json
{
  "provider": "gemini",
  "voice": "string",
  "language": "string"
}
```

## Code samples

### cURL

```bash
curl --request PUT \
  --url 'https://truememory-api.mvstg.com/v1/voice/preferences/<persona_id>' \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "provider": "gemini",
  "voice": "string",
  "language": "string"
}
'
```

### TypeScript

```typescript
const url = 'https://truememory-api.mvstg.com/v1/voice/preferences/<persona_id>';
const options = {
  method: 'PUT',
  headers: {'Content-Type': 'application/json', Authorization: 'Bearer <token>'},
  body: JSON.stringify({provider: 'gemini', voice: 'string', language: 'string'})
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));
```

### Python

```python
import requests

url = "https://truememory-api.mvstg.com/v1/voice/preferences/<persona_id>"

payload = {
    "provider": "gemini",
    "voice": "string",
    "language": "string"
}
headers = {
    "Content-Type": "application/json",
    "Authorization": "Bearer <token>"
}

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

print(response.text)
```

## Responses

### 200

Successful Response

#### Example

```json
{
  "provider": "string",
  "voice": "string",
  "language": "string"
}
```

- `provider` (`put_voice_preferences.response.200.provider`; string, required)
- `voice` (`put_voice_preferences.response.200.voice`; string, required)
- `language` (`put_voice_preferences.response.200.language`; string, required)

### 422

Validation Error

#### Example

```json
{
  "detail": [
    {
      "loc": [
        "string"
      ],
      "msg": "string",
      "type": "string",
      "input": null,
      "ctx": {}
    }
  ]
}
```

- `detail` (`put_voice_preferences.response.422.detail`; array<object>, optional)
  - `loc` (`put_voice_preferences.response.422.detail.loc`; array<any of>, required)
    - any of: `string`, `integer`
  - `msg` (`put_voice_preferences.response.422.detail.msg`; string, required)
  - `type` (`put_voice_preferences.response.422.detail.type`; string, required)
  - `input` (`put_voice_preferences.response.422.detail.input`; unknown, optional)
  - `ctx` (`put_voice_preferences.response.422.detail.ctx`; object, optional)


Source: https://truememory-docs.mvstg.com/api/voice/preferences/update/index.md