CPT Rest API

function custom_create_posttype() {

    register_post_type( 'codecinfo',

        array(
            'labels' => array(
                'name' => __( 'CodecInfo' ),
                'singular_name' => __( 'CodecInfo' )
            ),
            'public' => true,
            'has_archive' => true,
            'rewrite' => array('slug' => 'codecinfo'),
            'show_in_rest' => true,

        )
    );
}

add_action( 'init', 'custom_create_posttype' );