Foreword This statement was originally published on the swicg/general repository after I had been granted approval to merge. Since then one community member has raised that it did not follow the Community Group's processes, and consequently the document has been taken down from the original location. When publishing,
ActivityPub, AT Protocol, and more!
Talking about this article and how ActivityPub and AT Protocol are maybe not as different as people might think. We covered some slides to an unrecorded talk of mine, which explores a lot of things...
ActivityPub, AT Protocol, and more!
Where Does Community Live?
ActivityPub and ATProto both promise to rebuild social life online, but they answer the question of where community actually forms in fundamentally different ways. Protocol design is institutional design, and right now those institutions are being built.
FediForum Talk: How To Bullshit Your Way Through a Conversation about ActivityPub
By Evan Prodromou, Social Web Foundation and editor of the ActivityPub standard. One of the best bluffers in the field of distributed social networks gives you just enough knowledge about ActivityP...
ActivityPub
The ActivityPub protocol is a decentralized social networking protocol based upon the [ActivityStreams] 2.0 data format. It provides a client to server API for creating, updating and deleting content, as well as a federated server to server API for delivering notifications and content.
ActivityPub Won by Being Boring
At FediForum 2026, ActivityPub co-author Evan Prodromou explained why the protocol succeeded by staying deliberately ordinary and why the W3C's Q3 2026 revision needs to keep it that way.
ActivityPub
ActivityPub is a protocol and open standard for decentralized social networking. It provides a client-to-server (C2S) API for creating and modifying content, as well as a federated server-to-server (S2S) protocol for delivering notifications and content to other servers. ActivityPub is the defining standard of the Fediverse, a decentralised social network of various social interaction models, and content types, which consists of independently managed instances of software such as Mastodon, Pixelfed and PeerTube, among others.
Protocol Reader - Summer of Protocols
In the Fall of 2022, the word protocol was suddenly everywhere. The proximal cause was obvious: fueled, in part, by the highly visible and fractious change of ownership at Twitter, large numbers of people began heading for the exits. Most of them, of course, were just looking for
Developer Documentation for ActivityPub & Fediverse | SocialDocs
The comprehensive developer resource for building with ActivityPub, Mastodon, and the Fediverse. Guides, specs, API reference, and tools.
"If your decentralised protocol is missing features, the market will add them with centralisation." — @goat.navy *This*: - is why why the web was captured; - is why email became concentrated; - is why ActivityPub, as defined today, isn't capture-resistant.
Behold, the official release of my "simultaneously protocol argument and shitpost*" article: How can ATproto communities have credible exit from—that is, "can yeet away"—their hosting platforms? And how do small fuck-ass sites help? essentialrandomness.com/posts/the-concierge-and-the-v… *100/10 endorsement
AT-Communities #1: the Concierge, the Vault, and the Fuck-ass Astro Website – Essential Randomness
www.essentialrandomness.comNew from me: Federation Has a European Legal Problem on what the recent Russmedia ruling means for open social protocols like ActivityPub and atproto warning: do not read if you value your sanity connectedplaces.online/federation-has-a-european-leg…
Federation Has a European Legal Problem
connectedplaces.onlineI'm certainly not against saying what I think AT Protocol has wrong. github.com/swicg/activitypub-api/issues/…
There are a lot of architectural bits, but if I had to pick one design feature it's Lexicons. Lexicons allow for new shared data types and structures in a way that are immediately available on network for any other service provider to adopt. Getting shared agreement in ActivityPub is hard.
Pedro Vezza
Why did you decide to bet on atproto over Mastodon or similar?
