PHP 7.3 reaches end of support in December 2021 and Adobe Commerce 2.3.x reaches end of support in April 2022. We strongly recommend planning your upgrade now to Adobe Commerce 2.4.x and PHP 7.4.x to help maintain PCI compliance.

Magento_Swagger

The Magento_Swagger module provides access to a page generated using the swagger-ui package. The swagger-ui can be viewed on Github. It accesses the JSON Schema describing Magento’s REST APIs, and displays it in a user-friendly, navigable format.