







By Daniel Holmgren, head of protocol at Bluesky PBC. A technical overview of the recent extension of AT Protocol beyond public data to cover permissioned data and private group spaces.
The Atproto Spaces Alpha is Live - AT Protocol
Atproto Spaces, formerly known as “the permissioned data protocol,” is a new extension to atproto that enables non-public data. The alpha is now officially open. Here’s how to develop with it and what to expect as we work towards the full release.

The Atproto Spaces Alpha is Live - AT Protocol
Atproto Spaces, formerly known as “the permissioned data protocol,” is a new extension to atproto that enables non-public data. The alpha is now officially open. Here’s how to develop with it and what to expect as we work towards the full release.

The Atproto Spaces Alpha is Live - AT Protocol
Atproto Spaces, formerly known as “the permissioned data protocol,” is a new extension to atproto that enables non-public data. The alpha is now officially open. Here’s how to develop with it and what to expect as we work towards the full release.

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...
Evaluating permissioned spaces for community contexts - meri's missives
A look at Bluesky's proposed approach to private data on ATProto
Introduction to AT Protocol
Walkthrough of the various parts and concepts in Bluesky's AT Protocol (ATProto), the types of servers involved and how it all fits together

Introduction to AT Protocol
Walkthrough of the various parts and concepts in Bluesky's AT Protocol (ATProto), the types of servers involved and how it all fits together

Understanding Atproto - AT Protocol Docs - AT Protocol
Dive deeper into the concepts behind the AT Protocol.

Reintroducing Spaces - Daniel's Leaflets
Zooming out and re-motivating the design of spaces, the new primitive for non-public data on atproto.
Reintroducing Spaces - Daniel's Leaflets
Zooming out and re-motivating the design of spaces, the new primitive for non-public data on atproto.
Reintroducing Spaces - Daniel's Leaflets
Zooming out and re-motivating the design of spaces, the new primitive for non-public data on atproto.
Why a New Protocol? The History and Future of AT Protocol - AT Protocol
Bluesky CTO Paul Frazee and Head of Protocol Daniel Holmgren join for a wide-ranging conversation about what atproto is, why it exists, how it got built, and where it's going next. From a Twitter consultancy to an IETF working group, this is where to get started.

At @roomy.space we've been cooking up the design for the next, ATProto-native iteration of Roomy, and that includes private data on protocol! The first component that we're working on is a group membership service that we're calling the "arbiter". Here's full overview of the design so far!
The Arbiter - Group Management for Permissioned Spaces and Beyond
zicklag.leaflet.pubPermissioned Data Shapes: Self-Only Bookmarks - Nick's Blog

The Atproto Spaces Alpha is Live - AT Protocol
Reintroducing Spaces - Daniel's Leaflets
Permissioned Data Diary 1: To Encrypt or Not to Encrypt - Daniel's Leaflets