Found this helpful resource by Ben Boyter (@boyter): a collection of sequence diagrams explaining how #ActivityPub/#WebFinger works in practice—covering post creation, follows, boosts, deletions, and user migration.

If you're trying to implement ActivityPub, the spec can be frustratingly vague, and different servers do things differently. This aims to be a “clean room” reference for getting federation right.

https://github.com/boyter/activitypub

#fediverse #fedidev

On a related note, if you learn better by building things, @fedify has a step-by-step tutorial where you create a federated microblog from scratch—implementing actors, inbox/outbox, following, and posts along the way:

https://fedify.dev/tutorial/microblog