Thread:Extension talk:VisualEditor/VisualEditor on a private Wiki

I'm trying to run this on a wiki that requires login to both read and edit. It works if I configure the site to be visible to all users, but this isn't really a viable option for this wiki. Is there any way to let the parsoid service see the site, but deny all others unless logged in? If there was some sort of way to define the parsoid service, or localhost as a special user, group or bot, wouldn't it be possible to allow it to view the site while still shutting out all others who aren't supposed to view it?