# Seamless API

> **Warning:** Your site must implement this callback APIs. It is **required** for Seamless mode only.

The platform sends requests to your configured site endpoint (e.g. `https://your-backend.com/gold_api`).

> **Important:** When entering the Site Endpoint on the API Settings page, ensure that it is an `https` domain and does not include `/gold_api` at the end, as `/gold_api` will be appended automatically when sending API requests.