curl --request POST \
  --url https://api.cartesia.ai/voices/localize \
  --header 'Authorization: Bearer <token>' \
  --header 'Cartesia-Version: <cartesia-version>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "voice_id": "0418348a-0ca2-4e90-9986-800fb8b3bbc0",
  "name": "Antoine (en)",
  "description": "Antoine localized to English",
  "language": "en",
  "original_speaker_gender": "male"
}
'

import requests

url = "https://api.cartesia.ai/voices/localize"

payload = {
    "voice_id": "0418348a-0ca2-4e90-9986-800fb8b3bbc0",
    "name": "Antoine (en)",
    "description": "Antoine localized to English",
    "language": "en",
    "original_speaker_gender": "male"
}
headers = {
    "Cartesia-Version": "<cartesia-version>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Cartesia-Version': '<cartesia-version>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    voice_id: '0418348a-0ca2-4e90-9986-800fb8b3bbc0',
    name: 'Antoine (en)',
    description: 'Antoine localized to English',
    language: 'en',
    original_speaker_gender: 'male'
  })
};

fetch('https://api.cartesia.ai/voices/localize', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.cartesia.ai/voices/localize",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'voice_id' => '0418348a-0ca2-4e90-9986-800fb8b3bbc0',
    'name' => 'Antoine (en)',
    'description' => 'Antoine localized to English',
    'language' => 'en',
    'original_speaker_gender' => 'male'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Cartesia-Version: <cartesia-version>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.cartesia.ai/voices/localize"

	payload := strings.NewReader("{\n  \"voice_id\": \"0418348a-0ca2-4e90-9986-800fb8b3bbc0\",\n  \"name\": \"Antoine (en)\",\n  \"description\": \"Antoine localized to English\",\n  \"language\": \"en\",\n  \"original_speaker_gender\": \"male\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Cartesia-Version", "<cartesia-version>")
	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.cartesia.ai/voices/localize")
  .header("Cartesia-Version", "<cartesia-version>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"voice_id\": \"0418348a-0ca2-4e90-9986-800fb8b3bbc0\",\n  \"name\": \"Antoine (en)\",\n  \"description\": \"Antoine localized to English\",\n  \"language\": \"en\",\n  \"original_speaker_gender\": \"male\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.cartesia.ai/voices/localize")

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

request = Net::HTTP::Post.new(url)
request["Cartesia-Version"] = '<cartesia-version>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"voice_id\": \"0418348a-0ca2-4e90-9986-800fb8b3bbc0\",\n  \"name\": \"Antoine (en)\",\n  \"description\": \"Antoine localized to English\",\n  \"language\": \"en\",\n  \"original_speaker_gender\": \"male\"\n}"

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

{
  "id": "f161df88-b5a0-4ea8-aa21-6be12859f761",
  "access": {
    "type": "private",
    "visibility": "owner"
  },
  "name": "My localized voice",
  "tagline": "",
  "description": "A voice that I localized",
  "created_at": "2026-01-01T00:00:00.000Z",
  "language": "en",
  "is_public": false,
  "user_id": "org_123"
}