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.

Deep Dive into Wafrn: How One Platform Self-Hosts Both ActivityPub and Bluesky Identities

Deep Dive into Wafrn: How One Platform Self-Hosts Both ActivityPub and Bluesky Identities 26 February 2026 ActivityPub ATproto self-hosting architecture A technical analysis of Wafrn's dual-protocol a...

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

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.

ActivityPub Client API: A Way Forward | Steve Bate

The ActivityPub Client-to-Server (C2S) protocol was envisioned as a cornerstone of the decentralized social web, along with the Server-to-Server (S2S) protocol. Standardized by the W3C in 2018, C2S defines how user-facing applications, such as mobile apps or web clients, and bots should interact with social servers using Activity Streams 2.0 and JSON-LD. In theory, it ... Read more

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...

FEP-1042: Peer to Peer Fediverse Identities

Hey folks, we at [Distributed Press](https://distributed.press) have been working on making a bridge between peer to peer or "dweb" protocols and ActivityPub implementations over the past year and wanted to solidify our approach so that others can interoperate. Here's is an initial draft expla...

ActivityPods - Personal data spaces powered with ActivityPub

Brings together ActivityPub and Solid Pods and empowers developers to create truly decentralized applications.

Developer Documentation for ActivityPub & Fediverse | SocialDocs

The comprehensive developer resource for building with ActivityPub, Mastodon, and the Fediverse. Guides, specs, API reference, and tools.

Manton Reece - Introducing the Micro.blog PDS

I’ve started rolling out an AT Protocol PDS — personal data server — for new Micro.blog users. In the Bluesky world, a PDS is what stores your posts, follows, photos, and other data from apps. In the same way that creating an account on Micro.blog automatically gives you a fediverse handle, I wanted people to be able to create a Micro.blog account and have everything they needed to sign into Bluesky.