> ## Documentation Index
> Fetch the complete documentation index at: https://docs.simplepay.mx/llms.txt
> Use this file to discover all available pages before exploring further.

# Review API changes

> Contract changes, migrations, and removals for the SimplePay public API.

This page records changes that affect integrations. Each entry separates compatible changes, migrations, and removals.

## 2026-08-21

* The API reference now comes from the gateway contract
* Sandbox uses `https://api.test.simplepay.mx`
* Live uses `https://api.simplepay.mx`
* Pages for nonexistent routes were removed
* The reference covers Checkout, Payment Links, operations, catalogs, webhooks, and protected key management

<Info>
  A route absent from the public reference is not part of the integration
  contract.
</Info>