Version 4.4 contains the "scaffolding" as Matthew Mullenweg, founding developer of WordPress put it in his own intro. To be sure, WordPress is not the first CMS to incorporate the REST API framework.

SIHOT, one of the leading hotel management systems, has upgraded its SIHOT@360º API by incorporating new REST (Representational State Transfer) ...

It's not hard to create a RESTful web service in Java. In fact, frameworks like Spring Boot, the Eclipse MicroProfile and Jakarta Enterprise Edition make the development of RESTful Java applications ...

RESTful parameters promote an ease of use and resource access, but an improper setup can plague your search features and open the door for improper queries and paths that are difficult to fix.