I'm building fediverse.to!

display the server system of a contact to show the diversity of the Fediverse

ack, it is also important cause of “compatibility” layers for software not following the Conformance Section (not supporting “the entirety”). Personally my software would like to know what it can send:
ActivityPub or only Note or only Banana …
The standard has a generator field.

All:
In the last 4 meetings, Feb.-May, we talked about groups.
The parties who attend the meetings will do it together and interoperable.
The next meeting Developers Meeting 7 : A standard way to query in ActivityPub and we can also talk about “Potential Actions” and how to self-describe workflows.