CodeIgniter Restful API Controller - Easily build REST API with Token Authorization
WP REST API Controller allows you to control exposure of post types to the WP REST API using an admin interface. *Note:* WordPress 4.7 or later
A simple api controller helper trait
A special controller class for API responses the Cloudmanic Labs way.
API Generator for Laravel 5
Two simple tools for building REST APIs with Fractal: console generator and API skeleton
Custom controller for Wordpress JSON API allowing you to get registered menus