Default user agent should contain a URL for reference and contact

[JustAnotherArchivist]

For example, it might look like this:

ArchiveTeam ArchiveBot/20240923.203d40a (wpull 2.0.3, +https://wiki.archiveteam.org/index.php/ArchiveBot) and not Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36

Or perhaps a new page with info specifically for site operators.

This URL should only be included in the official instance, not by default in other instances.

[fluffy-critter]

Incidentally, my understanding is that Anubis only fires off for things with "Mozilla" in the user-agent, so you might consider changing the UA string anyway to look more like a well-behaved bot by default, and only changing the UA to be more browser-y if you're definitely getting a broken site. No sense being overly aggressive to people who are playing along. :)