> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.simplified.com/api-reference/platform/ai-generation/list-voices/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.simplified.com/_mcp/server.

# Media · Generate · List available TTS voices

GET https://api.simplified.com/api/v1/voices

List voices available to the current workspace, filtered by language.

`language_code` is the ONLY required parameter — use an exact BCP-47 locale
(`en-US`, `en-GB`, `fr-FR`, `hi-IN`, `ja-JP`). Combine with `is_premium=true`
for a short, high-quality shortlist.

The optional filters (`gender`, `provider`, `engine`, `is_premium`,
`language_name`, `search`) all default to an empty string `""`, which
means "no filter — return everything". Leave them at `""` unless the user
explicitly asked to filter. Do NOT substitute `0`/`false` for "no filter":
`0` is a REAL value (gender 0 = Male, provider 0 = Google, engine 0 =
Neural), so sending it silently narrows the list. The empty-string default
is the ONLY correct "unset" value.

Response:

* `voices[]`: `id` (uuid), `voice_name`, `language_code`, `avatar`,
  `voice_sample`, `gender` (0=Male, 1=Female, 3=Neutral), `is_premium`,
  `description`, `supports_instructions` (bool — `true` if the voice honors
  the `instructions` style/pace hint on generateAudio). Use `id` as
  `voice_id` in generateAudio. To re-resolve a single known `voice_id`
  (e.g. from a saved preference) without re-listing, use `getVoice`.
* `languages[]`: distinct `{language_code, language_name}` pairs.

To resolve a known `voice_name` (e.g. from an avatar roster) to its `id`, pass
`voice_name` + `language_code` — that pair is unique, and the `id` differs per
locale, so the name must be re-resolved whenever the language changes. Always
check the entry you use actually has that `voice_name` rather than trusting
`voices[0]` — see the `voice_name` parameter.

Reference: https://docs.simplified.com/api-reference/platform/ai-generation/list-voices

## Authentication

- `Authorization` header (required) (prefixed with ` Api-Key   `) — Header authentication of the form `Api-Key  <token>`
- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Request

### Query parameters

- `language_code` (string, required) — BCP-47 locale, exact match (e.g. `en-US`, `fr-FR`). Always required — narrows the list significantly.
- `language_name` (string, optional) — Display name, exact match (e.g. `English (US)`). Use when you only have the display name.
- `voice_name` (ApiV1VoicesGetParametersVoiceName, optional, default: ) — Exact voice name, case-sensitive (e.g. `Leda`, `Puck`). NOT unique on its own — a Chirp name exists once per locale (`Leda` x 53), and each locale has its own distinct `id`. Always pair with `language_code` to land a single voice. Use when you hold a name from a curated roster and need its `id` for generateAudio. ALWAYS confirm the returned entry's `voice_name` equals the name you asked for before using its `id`: deployments that predate this filter ignore the parameter and return the whole locale, so trusting `voices[0]` blindly can hand you a different voice — and a wrong-gender one.
- `search` (string, optional) — Substring match across `language_code` and `language_name` only — it does NOT search voice names. `search=Orus` returns nothing; to find a voice by name use the `voice_name` parameter. Use this for genuinely vague locale requests ("any English voice" → `search=en`).
- `is_premium` (ApiV1VoicesGetParametersIsPremium, optional, default: ) — Filter to premium (`true`) or standard (`false`) voices. Leave as the default empty string "" to return BOTH tiers. Only set `true`/`false` when the user explicitly asks for premium or standard.
- `provider` (ApiV1VoicesGetParametersProvider, optional, default: ) — Filter by TTS provider: 0=Google, 2=ElevenLabs, 3=OpenAI, 4=Microsoft, 5=Google Chirp 3 HD, 6=Gemini Flash TTS. Leave as the default empty string "" to include ALL providers. `0` is a real value (Google), NOT 'any' — only send an integer when the user explicitly names a provider.
- `gender` (ApiV1VoicesGetParametersGender, optional, default: ) — Filter by voice gender: 0=Male, 1=Female, 3=Neutral. Leave as the default empty string "" to return ALL genders. `0` is a real value (Male), NOT 'any' — only send an integer when the user explicitly asks for a gender.
- `engine` (ApiV1VoicesGetParametersEngine, optional, default: ) — Filter by synthesis engine: 0=Neural (higher quality), 1=Standard. Leave as the default empty string "" to return ALL engines. `0` is a real value (Neural), NOT 'any' — only send an integer when the user explicitly asks to restrict by engine.

## Response

### 200

Voices and distinct languages available to the workspace

- `any`

## Errors

### 401 Unauthorized Error

Unauthorized

- `any`

## Types

### ApiV1VoicesGetParametersVoiceName

### ApiV1VoicesGetParametersIsPremium

### ApiV1VoicesGetParametersProvider

### ApiV1VoicesGetParametersGender

### ApiV1VoicesGetParametersEngine

## Examples

**SDK Code**

```python
import requests

url = "https://api.simplified.com/api/v1/voices"

querystring = {"language_code":"language_code"}

headers = {"Authorization": "Api-Key  <apiKey>"}

response = requests.get(url, headers=headers, params=querystring)

print(response.json())
```

```javascript
const url = 'https://api.simplified.com/api/v1/voices?language_code=language_code';
const options = {method: 'GET', headers: {Authorization: 'Api-Key  <apiKey>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.simplified.com/api/v1/voices?language_code=language_code"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Api-Key  <apiKey>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.simplified.com/api/v1/voices?language_code=language_code")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Api-Key  <apiKey>'

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.simplified.com/api/v1/voices?language_code=language_code")
  .header("Authorization", "Api-Key  <apiKey>")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.simplified.com/api/v1/voices?language_code=language_code', [
  'headers' => [
    'Authorization' => 'Api-Key  <apiKey>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.simplified.com/api/v1/voices?language_code=language_code");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Api-Key  <apiKey>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "Api-Key  <apiKey>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.simplified.com/api/v1/voices?language_code=language_code")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```