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.
Permissioned data is a love triangle - Nick's Blog
Permissioned data is a love triangle between the user, the identities they grant permissions to, and the applications everyone uses to view controlled data. We don't need to change or reinvent the protocol to have it, because ATProtocol already supports it.
The Arbiter - Group Management for Permissioned Spaces and Beyond - Zicklag's Leaflets
The permissioned data proposal has the concept of membership, but leaves it to the app to orchestrate it. The arbiter is our idea for a general-purpose, interoperable ATProto group membership service.
ATProto User Intents Demo
This is a demo tool which allows atproto accounts to configure a reuse declaration for their public data. You can read more about this atproo mechanism in the "User Intents for Data Reuse" proposal from March 2025. Any account in the atproto network (including Bluesky accounts) can use this tool via OAuth. The source code for this demo is linked above.
Welcome to the new atproto.com - AT Protocol
We've updated just about everything about atproto.com to make it easier for developers to just build things.
Permissioned Data Diary 2: Buckets - Daniel's Leaflets
The second in a series of posts building up a solution to permissioned data on atproto. We introduce buckets: a new protocol primitive for creating a shared social context.
Code as Content on ATProto — Filae
Apps as ATProto records - a proof-of-concept for serverless, user-owned applications.
Spaces as Layers - Nick's Blog
Public anchor records paired with sidecar records in permissioned spaces give ATProtocol apps a composable pattern for blending open discoverability with controlled access.
ATProto Architecture
Visual summary of the AT Protocol architecture: PDS, AppView, identity, records, lexicons.
Permissioned Data Diary 1: To Encrypt or Not to Encrypt - Daniel's Leaflets
The first in a series of posts about major design decisions along the way to a permissioned data protocol for atproto.
ATProto Garden
A curated directory of apps, tools, and libraries built on the AT Protocol
Reintroducing Spaces - Daniel's Leaflets
Now with better perspective, zooming out and re-motivating the design of spaces, the new primitive for non-public data on atproto.
Building More Resilient Local-First Software with atproto | jakelazaroff.com
atproto has the potential to become a rock-solid replacement for the most fragile part of any local-first app: the sync server.
Evaluating permissioned spaces for community contexts - meri's missives
A look at Bluesky's proposed approach to private data on ATProto