Trying to make web applications federated is a popular effort. Examples include things like the “fediverse”, as well as various other efforts, like attempts to make distributed software forges, and so on. However, all of these efforts suffer from a problem which is fundamental in building federated applications built on top of the web platform.
The problem is fundamentally this: when building an application on top of the web platform, an HTTP URL inherently couples an application and a resource.
Application being the Lemmy UI I would guess.
No need for
.jsonor.apub, that’s already handled by theAcceptandContent-Typeheader.Just happens that the browser requests HTML, which loads lemmy-ui, which then requests exactly the same resource again but this time in ActivityPub format, which returns the data as expected in the standardized format.