curl -X POST "http://YOUR_SERVER_IP:8000/send-message" \
  -H "Content-Type: application/json" \
  -d '{
    "sessionId": "cp",
    "number": "8801XXXXXXXXX",
    "message": "Hello from cURL"
  }'

fetch("http://YOUR_SERVER_IP:8000/send-message", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    sessionId: "cp",
    number: "8801XXXXXXXXX",
    message: "Hello from JavaScript"
  })
})
.then(r => r.json())
.then(console.log)
.catch(console.error);

<?php
$url = "http://YOUR_SERVER_IP:8000/send-message";
$payload = json_encode([
  "sessionId" => "cp",
  "number" => "8801XXXXXXXXX",
  "message" => "Hello from PHP"
]);

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["Content-Type: application/json"]);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);

$response = curl_exec($ch);
$err = curl_error($ch);
curl_close($ch);

echo $err ? $err : $response;

import requests

url = "http://YOUR_SERVER_IP:8000/send-message"
payload = {
  "sessionId": "cp",
  "number": "8801XXXXXXXXX",
  "message": "Hello from Python"
}

r = requests.post(url, json=payload, timeout=30)
print(r.status_code, r.text)