Edit file File name : hello.php Content :<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName /** * Example of a WP.com endpoint. * * @package automattic/jetpack */ /** * Example endpoint. */ class WPCOM_REST_API_V2_Endpoint_Hello { /** * Constructor. */ public function __construct() { add_action( 'rest_api_init', array( $this, 'register_routes' ) ); } /** * Register endpoint route. */ public function register_routes() { register_rest_route( 'wpcom/v2', '/hello', array( array( 'methods' => WP_REST_Server::READABLE, 'callback' => array( $this, 'get_data' ), 'permission_callback' => '__return_true', ), ) ); } /** * Get data in response to the endpoint request. * * @param WP_REST_Request $request API request. */ public function get_data( $request ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable return array( 'hello' => 'world' ); } } wpcom_rest_api_v2_load_plugin( 'WPCOM_REST_API_V2_Endpoint_Hello' ); Save