wp_add_nav_menu_item action-hook . WP 4.4.0

Fires immediately after a new navigation menu item has been added.

Usage

add_action( 'wp_add_nav_menu_item', 'action_function_name_677', 10, 3 );
function action_function_name_677( $menu_id, $menu_item_db_id, $args ){
	// action...
}

$menu_id(int)

ID of the updated menu.

$menu_item_db_id(int)

ID of the new menu item.

$args(array)

An array of arguments used to update/add the menu item.

Where the hook is called

do_action( 'wp_add_nav_menu_item', $menu_id, $menu_item_db_id, $args );

Where the hook is used (in WP core)