curl -X POST 'https://api.wachap.com/v1/send' \
  -H 'Content-Type: application/json' \
  -d '{
    "number": "2299775xxxx",
    "type": "text",
    "message": "Hello from cURL",
    "instance_id": "609ACF283XXXX",
    "access_token": "646116c7XXXX"
  }'

const res = await fetch('https://api.wachap.com/v1/send', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    number: '2299775xxxx',
    type: 'text',
    message: 'Hello from JS',
    instance_id: '609ACF283XXXX',
    access_token: '646116c7XXXX'
  })
});
const data = await res.json();
console.log(data);

// app/api/send/route.js
export async function POST() {
  const payload = {
    number: '2299775xxxx',
    type: 'text',
    message: 'Hello from Next.js',
    instance_id: '609ACF283XXXX',
    access_token: '646116c7XXXX',
  };
  const res = await fetch('https://api.wachap.com/v1/send', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(payload),
  });
  return new Response(await res.text(), { status: res.status });
}

import requests
payload = {
  'number': '2299775xxxx',
  'type': 'text',
  'message': 'Hello from Python',
  'instance_id': '609ACF283XXXX',
  'access_token': '646116c7XXXX'
}
r = requests.post('https://api.wachap.com/v1/send', json=payload)
print(r.json())

<?php
$payload = [
  'number' => '2299775xxxx',
  'type' => 'text',
  'message' => 'Hello from PHP',
  'instance_id' => '609ACF283XXXX',
  'access_token' => '646116c7XXXX'
];
$ch = curl_init('https://api.wachap.com/v1/send');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
echo $response;
?>

package main
import (
  "bytes"
  "encoding/json"
  "fmt"
  "net/http"
  "io/ioutil"
)
func main() {
  payload := map[string]string{
    "number": "2299775xxxx",
    "type": "text",
    "message": "Hello from Go",
    "instance_id": "609ACF283XXXX",
    "access_token": "646116c7XXXX",
  }
  b, _ := json.Marshal(payload)
  resp, err := http.Post("https://api.wachap.com/v1/send", "application/json", bytes.NewBuffer(b))
  if err != nil { panic(err) }
  defer resp.Body.Close()
  body, _ := ioutil.ReadAll(resp.Body)
  fmt.Println(string(body))
}

{
  "status": 200,
  "message_id": "MSG-112233",
  "message": "Message envoyé"
}

{
  "error": "<string>"
}