Add custom post type to Rest API

include_cpt_in_rest_api

register_post_type('service',
    array(
        'labels' => array(
            'name' => __('Services'),
            'singular_name' => __('service')
          ),
          'public' => true,
          'has_archive' => true,
          'show_in_rest' => true, //Adds the custom post type to the rest api
     )
);