API Documentation

Complete reference for integrating SecureIO SMS

Base URL

https://api.secureiosms.com

Authentication

Pass your API key via ?api_key= query parameter on every request

HTTP Status Codes
200OK
400Bad Request
401Unauthorized
404Not Found
500Server Error

Endpoints

Best Practices
Store your API key securely — never expose it in client-side code
Check order status periodically rather than continuously polling
Handle rate limits gracefully with exponential backoff
Always check the HTTP status code along with the response body
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