token = niadra.subject_token(
    phone("+14155550123"),
    verification="V1",
    conversation_id="call-4471",
)
# Open the MCP connection to niadra.mcp_url with the source key
# and token.headers ({"Niadra-Subject-Token": ...})

const { data: token } = await niadra.subjectToken({
  subject: handles.phone("+14155550123"),
  verification: "V1",
  conversation_id: "call-4471",
});
// Open the MCP connection with the source key and the
// "Niadra-Subject-Token" header set to token.token

curl --request POST \
  --url https://{space}.{region}.api.niadra.com/v1/subject-tokens \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "subject": {
    "type": "phone_e164",
    "value": "+14155550123"
  },
  "verification": "V1",
  "conversation_id": "call-4471"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    subject: {type: 'phone_e164', value: '+14155550123'},
    verification: 'V1',
    conversation_id: 'call-4471'
  })
};

fetch('https://{space}.{region}.api.niadra.com/v1/subject-tokens', 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://{space}.{region}.api.niadra.com/v1/subject-tokens",
  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([
    'subject' => [
        'type' => 'phone_e164',
        'value' => '+14155550123'
    ],
    'verification' => 'V1',
    'conversation_id' => 'call-4471'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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://{space}.{region}.api.niadra.com/v1/subject-tokens"

	payload := strings.NewReader("{\n  \"subject\": {\n    \"type\": \"phone_e164\",\n    \"value\": \"+14155550123\"\n  },\n  \"verification\": \"V1\",\n  \"conversation_id\": \"call-4471\"\n}")

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

	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://{space}.{region}.api.niadra.com/v1/subject-tokens")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"subject\": {\n    \"type\": \"phone_e164\",\n    \"value\": \"+14155550123\"\n  },\n  \"verification\": \"V1\",\n  \"conversation_id\": \"call-4471\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{space}.{region}.api.niadra.com/v1/subject-tokens")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"subject\": {\n    \"type\": \"phone_e164\",\n    \"value\": \"+14155550123\"\n  },\n  \"verification\": \"V1\",\n  \"conversation_id\": \"call-4471\"\n}"

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

{
  "token": "nst1.eyJleHAiOjE3NTg1NjIxMjN9.Q2sX...",
  "expires_at": "2026-09-22T17:22:03Z"
}

{
  "code": "<string>",
  "status": 123,
  "title": "<string>",
  "detail": "<string>",
  "request_id": "<string>",
  "type": "about:blank"
}