







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.
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.
Permissioned Data Diary 5: What’s in a Name? - Daniel's Leaflets
In this permissioned data diary, we dive deep into the URI structure for permissioned data on atproto and use it to motivate a bunch of the larger design.
Permissioned Data Diary 5: What’s in a Name? - Daniel's Leaflets
In this permissioned data diary, we dive deep into the URI structure for permissioned data on atproto and use it to motivate a bunch of the larger design.
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 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.

Permissioned data on atproto — pick your depth
A private room in a place with no walls: how engineers are adding permissioned data to atproto. Read it plain-language or technical.
atproto made simple: granular permissions - underreacted
atproto made simple: granular permissions - underreacted
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.
Early Permission Sets · bluesky-social atproto · Discussion #4437
Progress is coming along on "Permission Sets", as part of the atproto OAuth and permission system. As with other parts of the protocol, seeing how this functionality gets implemented for ...

Permissioned Data Diary 3: Your Bucket, My Data - Daniel's Leaflets
The third in a series of posts building up a solution to permissioned data on atproto. We look at two different models for where buckets live and why the simpler-looking one doesn’t work out.
Representing groups in ATProto
I wanted to add book clubs to my GoodReads-like app (Collective), but ATProto doesn't have a standard way to handle shared group resources yet. So I'm building opensocial.community—a separate service that manages groups independently from any single app. This means the same book club could potentially work across multiple apps (imagine your book club having both a reading list in Collective AND a discussion forum in another app), and groups can migrate between providers if needed. It's probably over-engineered for my use case, but might help other ATProto developers building community features.

Representing groups in ATProto
I wanted to add book clubs to my GoodReads-like app (Collective), but ATProto doesn't have a standard way to handle shared group resources yet. So I'm building opensocial.community—a separate service that manages groups independently from any single app. This means the same book club could potentially work across multiple apps (imagine your book club having both a reading list in Collective AND a discussion forum in another app), and groups can migrate between providers if needed. It's probably over-engineered for my use case, but might help other ATProto developers building community features.

continuing to build up our permissioned data protocol! this one asks what a bucket actually is and where the data that constitutes a bucket is stored. it argues for maintaining the atproto ethos in the permissioned data protocol as always, looking forward to hearing your thoughts!
Permissioned Data Diary 3: Your Bucket, My Data
dholms.leaflet.pub