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.pubApr 18, 2026 at 4:46 PM
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.
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.
Live Call: Communities & Permissioned Data for Roomy.space
Playing with Parlances - Permissioned Data & AT Protocol - AT-WayFinding
Community privacy is one of our top priorities at @transrights.northsky.social which isn't possible out of the box with any ATproto implementation today that doesn't just hide an entire PDS. We're developing in the open and so I've published a proposal on it, feedback as always is we
I just finished a progress report / summary of the arbiter server that we've been working on at @roomy.space. The goal is to have an interoperable standard for group membership management on top of the ATProto permissioned space proposal. The last couple weeks were full of progress & discussion!
Arbiter Progress Report 1 - Zicklag's Leaflets
zicklag.leaflet.pubI've just finished the first, barely-working prototype of our new arbiter server! It's not ready for use just yet, but we're going to start experimenting with it in @roomy.space as a way to make every space a fully-fledged ATProto account that can be seamlessly managed by the Roomy space's admins.
Arbiter Progress Report 3
zicklag.leaflet.pub
