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Last updated June 15, 2022

From W3C Editor’s Draft

The ActivityPub protocol is a decentralized social networking protocol.

In ActivityPub, a user is represented by “ actors” via the user’s accounts on servers. User’s accounts on different servers correspond to different actors.

Based on ActivityStreams, a social data syntax.

Each actor has:

Here’s how sending and reading messages work

Messages made by clients get posted to their own server’s outbox and the server then posts that to the receiver’s inbox.

Interactive Graph