Trouble adding the meta-box code directly to my plugin

I am having a hard time figuring out what am doing wrong. I am trying to include my meta-box code directly (i.e am not installing meta-box as a plugin) to my source.

Here is my code

require plugin_dir_path(__FILE__) . '/ext/meta-box/meta-box.php';

// Custome post type
function security_compliance_prototype() {
  register_post_type( 'security_compliance',
    array(
      'labels' => array(
        'name' => __( 'Security Compliance' ),
        'add_new' => __('Add New Declaration'),
        'add_new_item' => __('Add New declaration'),
        'search_items' => __('Search Declarations'),
        'view_item' => __('View declaration'),
        'view_items' => __('View declarations'),
      ),
      'public' => true,
      'has_archive' => true,
    )
  );
}

add_action('init', 'security_compliance_prototype');

function declarationMeta($meta_boxes){
  $prefix = 'sc_pro_';
  $meta_boxes[] = array(
    'title'      => __( 'Test Meta Box', 'textdomain' ),
    'post_types' => 'post',
    'fields'     => array(
                      array(
                        'id'   => 'name',
                        'name' => __( 'Name', 'textdomain' ),
                        'type' => 'text',
                      ),
                    ),
  );
  return $meta_boxes;
}

add_filter( 'rwmb_meta_boxes', 'declarationMeta' );

I am expecting to see a field that a user can fill out in the custom post type. What can be wrong here?