A REST API, or Representational State Transfer API, is a type of web service that allows different applications to communicate with each other using standard web protocols. In the context of WordPress, a REST API allows developers to interact with the content and functionality of a WordPress site through HTTP requests and responses.
WordPress has its own REST API built into the core software, which means that developers can use it to build custom applications or integrate WordPress with other web services. The WordPress REST API provides access to a wide range of WordPress functionality, including posts, pages, comments, users, and more.
By using the WordPress REST API, developers can create custom applications that can interact with WordPress sites in a variety of ways. For example, a developer might use the REST API to create a mobile app that allows users to view and manage their WordPress site on the go, or to create a custom dashboard that displays key data from the site.
To use the WordPress REST API, developers need to send HTTP requests to the site’s REST API endpoint, which is typically located at the /wp-json/ URL. They can use different HTTP methods to interact with different parts of the site, such as GET requests to retrieve data, POST requests to create new content, PUT requests to update existing content, and DELETE requests to remove content.
Overall, the WordPress REST API is a powerful tool for developers who want to build custom applications or integrate WordPress with other web services. It provides a standardized way to interact with WordPress sites, and opens up a world of possibilities for developers who want to extend the functionality of WordPress beyond its core features.