Is there anything in the spec about a way for a server to broadcast that it has some kind of ActivityPub compatibility? I skimmed over the spec just now and couldn’t find anything but maybe I’m just reading poorly.
I’m looking for something where: given a host name like arbitrary.example.social, something like a .well-known I can ping to see if they have any AP compatibility at all. Right now I’m checking
api/v1/instance which a lot of implementations support, but I wanted to see if there’s some kind of top-level Actor that an s2s implementation should have.