[Plugin: Monkeyman Rewrite Analyzer] How make rules added with add_rewrite_rule() visible in plugin?

Thanks for the plugin, did not know that so many rules are there…

I have added an own rewrite-rule for ajax-requests (only POST is used in this case) in function.php like this

add_action('init', 'my_ajax_rewrite_init');
function my_ajax_rewrite_init() {
	add_rewrite_rule('^ajax/$', 'wp-admin/admin-ajax.php', 'top' );
}

and then flushed once using wordpress settings Permalinks menu.

The rewrite mysite.com/ajax/ works fine but I can not see/test it in the Rewrite Analyzer. Why not?

https://www.ads-software.com/extend/plugins/monkeyman-rewrite-analyzer/