Marketing no WhatsApp que é Aberto.

const res = await fetch('https://waba-api.startmessaging.com/api/v1/messages', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer ' + process.env.SM_API_KEY,
    'Content-Type': 'application/json',
    'Idempotency-Key': 'launch-autumn-919812345678',
  },
  body: JSON.stringify({
    "to": "+919812345678",
    "type": "template",
    "template": {
      "name": "new_collection_launch",
      "language": "en_US",
      "headerMediaUrl": "https://cdn.example.com/new-collection.jpg",
      "parameters": [
        {
          "text": "Aarti"
        }
      ],
      "buttonParameters": [
        {
          "index": 0,
          "subType": "url",
          "text": "autumn-26"
        }
      ]
    }
  }),
});

const { data } = await res.json();
console.log(data.id, data.status);

import os, requests

res = requests.post(
    'https://waba-api.startmessaging.com/api/v1/messages',
    headers={
        'Authorization': f"Bearer {os.environ['SM_API_KEY']}",
        'Idempotency-Key': 'launch-autumn-919812345678',
    },
    json={
      "to": "+919812345678",
      "type": "template",
      "template": {
        "name": "new_collection_launch",
        "language": "en_US",
        "headerMediaUrl": "https://cdn.example.com/new-collection.jpg",
        "parameters": [
          {
            "text": "Aarti"
          }
        ],
        "buttonParameters": [
          {
            "index": 0,
            "subType": "url",
            "text": "autumn-26"
          }
        ]
      }
    },
)

data = res.json()['data']
print(data['id'], data['status'])

<?php
$body = <<<'JSON'
{
  "to": "+919812345678",
  "type": "template",
  "template": {
    "name": "new_collection_launch",
    "language": "en_US",
    "headerMediaUrl": "https://cdn.example.com/new-collection.jpg",
    "parameters": [
      {
        "text": "Aarti"
      }
    ],
    "buttonParameters": [
      {
        "index": 0,
        "subType": "url",
        "text": "autumn-26"
      }
    ]
  }
}
JSON;

$ch = curl_init('https://waba-api.startmessaging.com/api/v1/messages');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'Authorization: Bearer ' . getenv('SM_API_KEY'),
        'Content-Type: application/json',
        'Idempotency-Key: launch-autumn-919812345678',
    ],
    CURLOPT_POSTFIELDS => $body,
]);
$data = json_decode(curl_exec($ch), true)['data'];
echo $data['id'] . ' ' . $data['status'];