As the leading SMS Gateway in Sri Lanka, Text.lk allows you to send SMS programmatically using SMS API. To authenticate your requests, you need an API Key / API Token, which you can easily find in your dashboard.

How to Get Your API Token / API Key #

• Register on text.lk and log in to your dashboard.
• From the left side menu, click “Developers”.
• You will see your API Token there — this is your API Key.

🔄 How to Regenerate Your API Token / API Key #

• Log in to your Text.lk dashboard.
• Go to “Developers”.
• Click “Regenerate Token” to generate a new one.

🔐 How to Use the API Key / API Token #

Your API Key is used for authentication.
You can use it in two ways: OAuth (Bearer Token) or HTTP Query Parameters.

✅ oAuth Method (Recommended) #

curl -X POST https://app.text.lk/api/v3/sms/send \
-H "Authorization: Bearer YOUR_API_TOKEN" \
-H "Content-Type: application/json" \
-H "Accept: application/json" \
-d '{
  "recipient": "94710000000",
  "sender_id": "TextLKDemo",
  "type": "plain",
  "message": "This is a test message"
}'

curl -X POST https://app.text.lk/api/v3/sms/send \
-H "Authorization: Bearer YOUR_API_TOKEN" \
-H "Content-Type: application/json" \
-H "Accept: application/json" \
-d '{
  "recipient": "94710000000",
  "sender_id": "TextLKDemo",
  "type": "plain",
  "message": "This is a test message"
}'

🌐 HTTP Method #

https://app.text.lk/api/http/sms/send?recipient=94710000000&sender_id=TextLKDemo&message=test&api_token=YOUR_API_TOKEN

https://app.text.lk/api/http/sms/send?recipient=94710000000&sender_id=TextLKDemo&message=test&api_token=YOUR_API_TOKEN

📌 What You Can Do With Your API Key #

• 📤 Send SMS using Text.lk SMS API
• 👤 Manage Profiles (Text.lk Profile API)
• 📇 Manage Contacts (Text.lk Contacts API)
• 🗂️ Manage Contact Groups (Text.lk Contacts Groups API)

If you need help with integration, feel free to reach out! 😊