
Frontend Gatekeeper hides the public frontend of your WordPress site unless visitors arrive with a configured URL parameter and value. It is useful for staging sites, soft launches, client previews, and pre-release content where you want to share a single shareable link instead of issuing individual user accounts.
Logged-in users always see the site normally, so editors and administrators are never blocked.
render_block filter and WP_HTML_Tag_Processor when available./site-a/ will not leak the token to /site-b/.wp-login.php are always allowed through.