@anonymous It's probably about 50/50. FSE doesn't talk to Tor, so we can't fetch keys, so incoming activities get rejected (this includes, e.g., follows). I might steal mint's code and get that working, but it's not currently on the list. We don't have signed fetches on, so federation with Akkoma (which enables them by default) is going to be somewhat limited anyway.

On the other hand, we don't block any *incoming* traffic from Tor. (I use Tor to view FSE most of the time.) So you should be able to fetch activities from FSE.