AT Protocol

Authenticated Transfer Protocol

atproto can't be controlled by any one organization due to its federated nature - various parts of the system that communicate with each other can have multiple people running them

BlueSky is merely a app running on a distributed protocol called

ATProto, and its core consists of a triangular structure of PDS (Personal Data Server), Relay (stream aggregation), and AppView (API/search)

AT Protocol Usages

AT Protocol Server

ATProto

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How Does BlueSky Work?

One of the reasons I am enthusiastic about BlueSky is because of the way that it works. So in this post, I am going to lay out some of the design and the principles behind this design, as I understand them. I am not on the BlueSky team, so these are my takes only.

https://steveklabnik.com/writing/how-does-bluesky-work

atproto

bluesky-social • Updated 2025 Aug 22 1:26

atproto.com

https://atproto.com/guides/

AT Protocol

Authenticated Transfer Protocol

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