What if... you had one Fedi account on a generic headless #ActivityPub server that simply hosts and federates your data... and had C2S UIs for microblogging, long form writing, media editing and sharing, link aggregation, games, fitness tracking, and so on, that all used that same Fedi account. Technically, it's a similar concept as ATProto (but no relay and app view) and Solid Pods (but no RDF).

It seems possible... if we can improve the AP C2S API/protocol sufficiently.

@steve If by "sufficiently improve" you mean throwing it away and replacing with a better protocol, then yes it's possible.

@silverpill @steve

I can't wait to see what you build! Good luck.

@evan @silverpill @steve

Maybe I am way over my head, but this seems like *exactly* what I am building right now and I'm not really building anything outside of ActivityPub C2S?

I mean... Yes, my current client assumes some specific profile for OAuth and the client will need a proxy to get some data remote servers (to bypass authorized fetch, or to resolve documents from transient activities), but doesn't seem to me that anything I am doing is outside of AP's scope?

@raphael @silverpill @steve I also think that Steve's vision is realisable with ActivityPub API, although I think adding optional features like search, server push and so on makes it easier.

@raphael @silverpill @steve

Silverpill does not agree with us. I am wishing Silverpill well in their plan to rebuild with a completely different ground-up API. Silverpill is skilled and smart and very familiar with ActivityPub in great detail, so I'm sure they will come up with some interesting API architecture.

@raphael @silverpill @steve I don't intend to stop working on the ActivityPub API.

There are a lot of us collaborating through the SocialCG ActivityPub API Task Force, and I expect that collaboration to continue:

https://github.com/swicg/activitypub-api

GitHub - swicg/activitypub-api: ActivityPub API Task Force repository.

ActivityPub API Task Force repository. Contribute to swicg/activitypub-api development by creating an account on GitHub.

GitHub

@evan @raphael @steve I think a generic ActivityPub server can't be built without major changes to ActivityPub. For example, it might be necessary to make all side-effects of activities explicit.

And there is a bigger problem. A generic server without FEP-ef61 is like ATProto PDS or Nostr relay but all data is tied to a single server. This means that it is obsolete before the work has even begun.

@silverpill @evan @raphael Several generic AP server implementations have been built, so I don't know what you mean by the side-effect comment. Note that my mental model of a generic server doesn't implement any domain-specific behaviors in the server, but only side-effects specified by AP (and extended generic C2S support). There are also simpler ways to design servers so that content isn't tied to a specific server (with different tradeoffs than FEP-ef61). That's a long discussion...

@steve @evan @raphael A server can't properly process an arbitrary activity without knowing its side effects. A server that only supports a small number of activities mentioned in the ActivityPub spec is obviously not generic.

I can point to other challenges because I've been working on this problem for years, but...

Several generic AP server implementations have been built
There are also simpler ways to design servers so that content isn't tied to a specific server

Wow, for real? I suppose it's time for me to retire then.

@silverpill @steve @evan

I don't follow: how does that relate to the "ActivityPub API" if the activity is "arbitrary" and not defined by ActivityPub, not using AS2 vocabulary?

Isn't that like saying that we can't use HTTP as a protocol because an HTTP server doesn't know what to do with verbs defined on, e.g, WebDAV?

@raphael @steve @evan It relates to ActivityPub API because ActivityPub is described as an extensible protocol. If a server doesn't support "extensions", it is not a generic server.

@silverpill @raphael @steve I think that comes down to what you mean by "support".

I think a server that delivers extension activities, or activities with extension properties or extension types as `object` etc , locally or remotely, is "supporting" those types.

Implementing server-side side effects of some extensions may be a bonus, but we can build a lot of great stuff without it.