Protocol Reference

A reference of all major components and implementations of ATProto

The AT Protocol | Bluesky

The AT Protocol (Authenticated Transfer Protocol, or atproto) is a standard for public conversation and an open-source framework for building social apps.

IETF124: Authenticated Transfer (ATP) Pre-BOF - ATProto Community

Nov 5th, 2025 in Montreal

Understanding Atproto - AT Protocol Docs - AT Protocol

Dive deeper into the concepts behind the AT Protocol.

Authenticated Transfer (atp)

Document dependencies

Authenticated Transfer (atp)

Document dependencies

Neznam Atproto Share

Automatically share to Authenticated Transfer Protocol networks like BlueSky and display comments from that network below the post as comments.

FediForum Talk: Atproto: A Technical Introduction

By Daniel Holmgren, head of protocol at Bluesky PBC. AT Protocol (atproto) is the open protocol powering Bluesky and the emerging Atmosphere. This talk gives a high-level overview of atproto's app...