Free WhatsApp API Developer Plan: Start at ₹0, Scale to 100K Messages

const res = await fetch('https://waba-api.startmessaging.com/api/v1/messages', {
  method: 'POST',
  headers: {
    Authorization: 'Bearer sm_live_your_api_key',
    'Content-Type': 'application/json',
    'Idempotency-Key': 'welcome-919876543210',
  },
  body: JSON.stringify({
    to: '+919876543210',
    type: 'template',
    template: {
      name: 'order_confirmation',
      language: 'en_US',
      parameters: [{ text: 'Aarti' }, { text: '#1042' }],
    },
    clientReference: 'order-1042',
  }),
});
const { data } = await res.json();
console.log(data.id, data.status); // "3f6c2a1e-…" "sent"

import requests

res = requests.post(
    "https://waba-api.startmessaging.com/api/v1/messages",
    headers={
        "Authorization": "Bearer sm_live_your_api_key",
        "Idempotency-Key": "welcome-919876543210",
    },
    json={
        "to": "+919876543210",
        "type": "template",
        "template": {
            "name": "order_confirmation",
            "language": "en_US",
            "parameters": [{"text": "Aarti"}, {"text": "#1042"}],
        },
        "clientReference": "order-1042",
    },
)
print(res.json()["data"])

const res = await fetch('https://waba-api.startmessaging.com/api/v1/me', {
  headers: { Authorization: `Bearer ${process.env.SM_API_KEY}` },
});
const { data } = await res.json();
console.log(data.apiKey.scopes);

import os, requests

res = requests.get(
    "https://waba-api.startmessaging.com/api/v1/me",
    headers={"Authorization": f"Bearer {os.environ['SM_API_KEY']}"},
)
print(res.json()["data"]["apiKey"]["scopes"])

<?php
$ch = curl_init('https://waba-api.startmessaging.com/api/v1/me');
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ['Authorization: Bearer ' . getenv('SM_API_KEY')],
]);
$me = json_decode(curl_exec($ch), true);
print_r($me['data']['apiKey']['scopes']);

{
  "data": {
    "workspace": {
      "id": "6f1e2d3c-4b5a-4968-8776-5a4b3c2d1e0f",
      "name": "Meera Boutique",
      "slug": "meera-boutique"
    },
    "plan": { "code": "DEV_1K", "name": "Developer 1K", "tier": 2 },
    "apiKey": {
      "id": "0e9d8c7b-6a5f-4e3d-2c1b-0a9f8e7d6c5b",
      "prefix": "sm_live_ab12",
      "scopes": ["messages:send", "messages:read"]
    },
    "limits": { "requestsPerMinute": 120, "sendsPerHour": 10000 },
    "usage": { "requestsThisMinute": 12, "sendsThisHour": 140 },
    "messages": {
      "period": "2026-10",
      "sent": 420,
      "limit": 1000,
      "stopAt": 3000,
      "resetsAt": "2026-10-31T18:30:00.000Z"
    }
  },
  "meta": {
    "requestId": "b7c1e0d2-5a4f-4c3b-9e8d-1f2a3b4c5d6e",
    "timestamp": "2026-10-02T10:00:00.000Z"
  }
}