const res = await fetch('https://your-kebsend-host.com/api/v1/send-sms', {
  method: 'POST',
  headers: {
    Authorization: 'Bearer ksnd_live_...',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    to: '233240001234',
    message: 'Your verification code: 9482',
    senderId: 'MYSHOP'
  })
})
console.log(await res.json())

import requests

res = requests.post(
    "https://your-kebsend-host.com/api/v1/send-sms",
    headers={"Authorization": "Bearer ksnd_live_..."},
    json={
        "to": "233240001234",
        "message": "Your verification code: 9482",
        "senderId": "MYSHOP",
    },
)
print(res.json())

$ch = curl_init('https://your-kebsend-host.com/api/v1/send-sms');
curl_setopt_array($ch, [
  CURLOPT_POST => true,
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_HTTPHEADER => [
    'Authorization: Bearer ksnd_live_...',
    'Content-Type: application/json',
  ],
  CURLOPT_POSTFIELDS => json_encode([
    'to' => '233240001234',
    'message' => 'Your verification code: 9482',
    'senderId' => 'MYSHOP',
  ]),
]);
echo curl_exec($ch);