woocommerce/api/api.php

<?php
function register_woocommerce_admin_test_helper_rest_route( $route, $callback, $additional_options = array() ) {
    add_action( 'rest_api_init', function() use ( $route, $callback, $additional_options ) {

    	$default_options = array(
		    'methods'  => 'POST',
		    'callback' => $callback,
		    'permission_callback' => function( $request ) {
			    if ( ! wc_rest_check_manager_permissions( 'settings', 'edit' ) ) {
				    return new \WP_Error(
					    'woocommerce_rest_cannot_edit',
					    __( 'Sorry, you cannot perform this action', 'woocommerce-admin-test-helper' )
				    );
			    }
			    return true;
		    },
	    );

    	$default_options = array_merge( $default_options, $additional_options );

        register_rest_route(
            'wc-admin-test-helper',
            $route,
            $default_options
        );
    } );
}

require( 'admin-notes/delete-all-notes.php' );
require( 'admin-notes/add-note.php' );
require( 'tools/trigger-wca-install.php' );
require( 'tools/run-wc-admin-daily.php' );
require( 'options/rest-api.php' );