Add multiple custom post types to the WP-API

wp-api-cpt.php

<?php

// This is a temporary solution until register_post_type_args is available
// After adding your CPT, you can find it at mysite.com/wp-json/wp/v2/[slug]

function sb_add_cpts_to_api() {
    global $wp_post_types;
    
    // Add CPT slugs here
    $arr = ['fake','movie','books'];
    
    foreach( $arr as $key ) {
	    
	// If the post type doesn't exist, skip it
	if( !$wp_post_types[$key] )
		continue;
	    	
    	$wp_post_types[$key]->show_in_rest = true;
	$wp_post_types[$key]->rest_base = $key;
    }
}
add_action( 'init', 'sb_add_cpts_to_api', 30 );