API WhatsApp sin Meta BSP

import requests

response = requests.post(
    "https://api.smsmasivos.com.mx/whatsapp/send",
    headers={"apikey": "TU_KEY", "Content-Type": "application/json"},
    json={"number": "+521234567890",
        "message": "Pedido #8821 confirmado"}
)
print(response.json())

const res = await fetch('https://api.smsmasivos.com.mx/whatsapp/send', {
  method: 'POST',
  headers: {'apikey': 'TU_KEY',
    'Content-Type': 'application/json'},
  body: JSON.stringify({
    number: '+521234567890',
    message: 'Pedido #8821 confirmado'})
});
const data = await res.json();
console.log(data);

<?php
$ch = curl_init('https://api.smsmasivos.com.mx/whatsapp/send');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
  'apikey: TU_KEY',
  'Content-Type: application/json'
]);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
  'number' => '+521234567890',
  'message' => 'Pedido #8821 confirmado'
]));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
echo $response;