Kicking off the ATP Working Group at the IETF
The Authenticated Transfer Protocol working group has been created at the IETF. Now that we have a charter, we are looking forward to participation from the broader ATP ecosystem.
By AT Protocol Team
Blog
News, updates, and insights from the AT Protocol team.
AT Protocol Roadmap (Spring 2026)
Updates to the AT Protocol roadmap, including Permissioned Data and Account Experience.
By Bluesky Protocol Team
Introducing Hubble: A Public Mirror for the Whole Atmosphere
Bluesky is providing a grant to the creator of Microcosm to build a full mirror of public data on the Atmosphere to help make the network more resilient.
By fig
Working to Decentralize FedCM
Bluesky Social PBC have given a grant to Emelia Smith, an Invited Expert with the FedID Working Group, to work on FedCM with the goal of making FedCM really work for the decentralized web.
By Emelia Smith
Supporting the npmx Alpha Launch
The launch of npmx is an incredible showcase for how open source communities can build quickly on top of atproto.
By Jim Ray
PLC Read Replicas
Introducing a self-hostable did:plc read-replica service.
By David Buchanan
Welcome to the New atproto.com
We've updated just about everything about atproto.com to make it easier for developers to just build things.
By Alex Garnett
Upcoming Relay Transition
What the new relay rollout means for consumers of the firehose.
By Bryan Newbold
Introducing Tap: Repository Synchronization Made Simple
We recently released Tap, a tool designed to handle the hard parts of repo synchronization, so you can focus on building your application.
By Jim Ray
Protocol Check-in (Fall 2025)
The Atmosphere is thriving, here's a closer look
By AT Protocol Team
Taking AT to the IETF
We recently posted two drafts to the IETF Data Tracker. This is the first major step towards standardizing parts of AT in an effort to establish long-term governance for the protocol.
By AT Protocol Team
Creating an Independent Public Ledger of Credentials (PLC) Directory Organization
As the next step of maturing governance of the PLC identity system, Bluesky Social PBC is supporting the creation of an independent organization to operate the PLC directory.
By AT Protocol Team
OAuth Improvements
We've been making improvements to the end-user and developer experiences with atproto OAuth.
By AT Protocol Team
Network Account Management
We recently shipped new functionality to the PDS reference implementation (and Bluesky's hosting service) which provides a web interface to create and manage accounts directly on the PDS itself.
By AT Protocol Team
Relay Updates for Sync v1.1
Updates to our reference implementation of the relay support sync version 1.1
By AT Protocol Team
2025 Protocol Roadmap (Spring and Summer)
Updates to the AT Protocol roadmap, including Sync v1.1, auth scopes, PDS account management, and more.
By AT Protocol Team
Looking Back At 2024 AT Protocol Development
A lot of progress was made on the protocol in 2024, here's a look at the big milestones
By AT Protocol Team
Relay Operational Updates
Updates on changes to Bluesky relay servers and guidance for firehose consumers.
By AT Protocol Team
Lexicons, Pinned Posts, and Interoperability
A discussion of Lexicons, schema extensions, and lessons learned from the pinned posts feature collision.
By AT Protocol Team
Introducing Jetstream
Introducing Jetstream, an alternative streaming solution with simple JSON encoding and reduced bandwidth.
By AT Protocol Team
OAuth for AT Protocol
Releasing the initial specification of OAuth for AT Protocol, the primary authentication and authorization system going forward.
By AT Protocol Team
Labeling Services Microgrants
Launching microgrants for labeling services on Bluesky to support moderation and community safety.
By AT Protocol Team
2024 Protocol Roadmap
An update on our progress and our general goals and focus for the coming months.
By AT Protocol Team
Meet the second batch of AT Protocol Grant Recipients
Announcing the second batch of AT Protocol grant recipients, distributing $4,800 total in grants.
By AT Protocol Team
Announcing AT Protocol Grants
Announcing the AT Protocol Grants program, aimed at fostering the growth and sustainability of the atproto developer ecosystem.
By AT Protocol Team
Early Access Federation for Self-Hosters
Releasing an early-access version of federation intended for self-hosters and developers.
By AT Protocol Team
Download and Parse Repository Exports
How to export and parse a data repository as a CAR file.
By AT Protocol Team
2023 Protocol Roadmap
The current AT Protocol development plan through to a version one release.
By AT Protocol Team
Building on the AT Protocol
What you can already build on atproto, and what you can expect soon.
By AT Protocol Team
Bluesky BGS and DID Document Formatting Changes
Protocol and infrastructure changes including the BGS firehose and DID document formatting updates.
By AT Protocol Team
Updates to Repository Sync Semantics
Announcing updates to atproto repositories that remove history and replace it with a logical clock.
By AT Protocol Team
Posting via the Bluesky API
A guide to creating posts via the Bluesky API, including mentions, links, replies, quote posts, and image embeds.
By AT Protocol Team
Bluesky Call for Developers
Bluesky is an open social network built on the AT Protocol. If you're a developer interested in building on atproto, we'd love to hear from you.
By AT Protocol Team
Federation Developer Sandbox Guidelines
Guidelines for the atproto federation developer sandbox environment.
By AT Protocol Team
Why are blocks on Bluesky public?
The technical implementation of public blocks and some possibilities for more privacy preserving block implementations.
By AT Protocol Team