Extensive support of ActivityPub operations, e.g. write public notes, follow users, be followed, reply to the notes of others, admire wonderful content (like or boost), write private messages...
Multiuser
Mastodon API support, so Mastodon-compatible apps can be used (work in progress)
I'm a bit confused. I should join that room but if you can help understand: It seems a bit too minimalistic as of right now to even be usable as a single-user instance. Would it have a feed, A Hashtag section, atleast?