How to apply noindex tag in feed url

Hello,

Thank you for contacting us and bringing your concern to our attention.

You can try to add the following filter on your website to set your feed URLs to noindex:

function custom_noindex_feeds() {
    if (is_feed()) {
        echo '<meta name="robots" content="noindex,nofollow">' . PHP_EOL;
    }
}
add_action('wp_head', 'custom_noindex_feeds');

Here’s how you can add filter/hook to your WordPress site: https://rankmath.com/kb/wordpress-hooks-actions-filters/

Hope that helps and please don’t hesitate to let us know if you have any other questions.
 
Thank you.