Documentation

Authentication

Authentication. Verified API reference for secure server-side integration.

One global rate Audience check first Pay for actual volume

Verified API reference for secure server-side integration. Credentials stay server-side.

Current API gateway: https://sms-retail.io/

Send the API key only from your server. Every request requires these headers.

X-API-Key: YOUR_API_KEY
Content-Type: application/json
Accept: application/json

Never embed the API key in browser JavaScript, mobile applications, public repositories or analytics events.