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?
Feb 27, 2026 at 12:02 AM
Standard.site - One schema. Every platform.
Standard.site provides shared lexicons for long-form publishing on AT Protocol. Making content easier to discover, index, and move across the ATmosphere.
Standard.site - One schema. Every platform.
Standard.site provides shared lexicons for long-form publishing on AT Protocol. Making content easier to discover, index, and move across the ATmosphere.
Lexicon Embeds Overview
ATProto’s inside out structure provides an opportunity for open, permissionless building on top of any component in the network, including its extensible data schema definition system, Lexicons. One of the opportunities this presents is users sharing their data and records with multiple apps. Those apps may be direct substitutions (different clients for microblogging say), or apps that use that data in a variety of ways, such as Popfeed an app which aggregates posts about a variety of media ty...
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...
Lexicon Store - ATProto Lexicon Schema Registry
Discover and explore AT Protocol lexicon schemas. The verified registry for Bluesky and ATProto lexicons.
Lexicon Community
Lexicon Community is a shared space for general discussion of lexicons, lexicon design, and shared usage of lexicons.
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.
Lexicon Service Docs - at:// pizza thoughts
Riffing on some ways to make network services more legible to humans and machines
New Build Notes article discussing ATProto and how we as developers can go about forming standard lexicons for common datatypes without being overly prescriptive on implementation details that would limit creativity and competition blog.stygiantech.dev/a/3msmoumcr4d23-atproto-stand…
ATProto Standards Bodies—Guiding the Future of the Network
blog.stygiantech.devKnowledgebase Apps
Long form writing. Group access control. OIDC so we can use atproto. The commercial versions would be Notion or Confluence. An open version would be Outline Wiki.
ATProto, Activitypub and FOSS applications
Two protocols, and an acronym. Directories, servers, services and tools that support one or more of these namesakes' or these namestakes' ideals [decentralized, federated etc]. Plus a few wikis for further reading.
Fichiers - La Suite Numérique
Docs - La Suite Numérique
Docs — Turn your team's content into knowledge
Enterprise-ready Wiki for Teams | Docmost
Outline – Team knowledge base & wiki
self-hostable notion replacements (by Tyler Lawson) — Semble
A quick look at every link that's been added thus far.
Session | Send Messages, Not Metadata. | Private Messenger
NextGraph - Decentralized, encrypted and local-first platform and framework, towards the better internet we all deserve!
Freenet
Berty · Berty Technologies
p2panda
