AP for developers in one sentence

If you met a reasonably competent developer, but who had never heard of ActivityPub or the broader space, and you had one (not too long) sentence to convey to them was ActivityPub is and what it might be good for, what would you say?

Context: After the basic make-it-current updates for activitypub.rocks (see milestones here: https://github.com/swicg/activitypub.rocks/milestones), our first audience is developers. So if a developer comes across activitypub.rocks, what’s the first sentence that it should say so they decide it might be interesting enough to spend another 20 seconds to read more sentences than just the first?

My best take right now:

“If you like to use social web site A, and your friend likes to use social web site B, ActivityPub allows you to interact socially, follow, reply etc although you use different websites.”

Please propose something better! :-)

Thanks,




Johannes.



Johannes Ernst

Fediforum <https://fediforum.org/> — coming up again October 7-8 online, and we meet an in-person in Italy in November
Dazzle Labs <https://dazzlelabs.net/> 

Received on Monday, 22 September 2025 19:22:26 UTC