OnlineSMSService API Documentation

Welcome to the developer documentation. Integrates SMS capabilities directly into your software, website, or mobile application with our REST API.

🔑 Authentication

Learn how to authenticate your API requests securely.

📨 Send SMS

Send transactional and promotional SMS programmatically.

Base URL

https://api.onlinesmsservice.com/

Rate Limits

Our API is rate limited to 100 requests per second per IP address. If you need higher limits, please contact support.