hello-world.php

/**
 * Returns Hello World.
 *
 * @param object $data Options for the function.
 * @author Scott Anderson <scott.anderson@webdevstudios.com>
 * @return string
 */
function hello_world( object $data ) {
	return 'Hello World';
}

add_action( 'rest_api_init', function () {
	register_rest_route( 'myepiscopal', '/hello_world/', array(
		'methods'  => 'GET',
		'callback' => 'hello_world',
	) );
} );