SMS API Sri Lanka — REST API & SDKs for Developers

The TXTMSG v3 REST API lets you send, schedule, and track SMS messages programmatically from your application. With 140ms average latency, 99.99% uptime, and SDKs for PHP, Python, Node.js, Java, Go, Ruby, Flutter, and Laravel, you can integrate reliable SMS into any stack in minutes.

How the SMS API Works

1. Get your API credentials — Sign up for a free account and retrieve your API key from the TXTMSG dashboard. Ready in under a minute.
2. Choose your integration method — Use one of our 8 SDKs (PHP, Python, Node.js, Java, Go, Ruby, Flutter, Laravel) or call the REST API directly with cURL.
3. Send your first message — With 100 complimentary trial credits and a demo sender ID pre-configured, send your first test message and see TXTMSG in action.
4. Scale up — Move to a production plan, register your branded sender ID, and start sending at scale with webhooks for delivery callbacks.

API Features for Developers

Quick Start — Send Your First SMS

curl -X POST https://sms.txtmsg.lk/api/v3/sms/send \
  -H "Authorization: Bearer TXTMSG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "recipient": "+947XXXXXXXX",
    "sender_id": "YourBrand",
    "type": "plain",
    "message": "Hello from TXTMSG!"
  }'

$client = new Txtmsg\Client("API_KEY");
$response = $client->messages->create([
    'to' => '+947XXXXXXXX',
    'body' => 'Your code: 8821',
    'priority' => 'high'
]);
echo $response->status; // "delivered"

API Pricing

Who Uses the TXTMSG API?

Frequently Asked Questions