Expose a REST API endpoint using a repository in Magento

A major reward you get for setting up all of the repository and data interface code comes when you need to access your data with an API. This means you can build a REST API for your blog posts with very little extra effort.

There’s a single file that routes endpoints to interface methods: webapi.xml. In the etc directory, create a new file named webapi.xml. Set up an XML prolog along with a routes root node, with the noNamespaceSchemaLocation set to the Magento Webapi module’s webapi.xsd file:

<?xml version="1.0"?>
<routes xmlns...