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Posts by AT Protocol Developers

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Kicking off the ATP Working Group at the IETF - AT Protocol 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.

Pleased to announce that an Authenticated Transfer Protocol (ATP) working group has been created at the IETF!

Grateful to everybody who participated in the BoF and chartering process. Details on next steps and how to get involved inside.

atproto.com/blog/kicking...

2 days ago 406 93 8 7
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Open Social Awards | New_ Public The awards aim to recognize and celebrate the breakthrough products of developers building on open protocols such as ATProtocol and ActivityPub.

📢 Announcing the Open Social Awards ✨

Alongside PublicSpaces and Waag Futurelab, we aim to honor the work of independent builders around the world, creating innovative products for the open web!

More details below…

newpublic.org/OSA

1 week ago 87 25 9 10
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AT Protocol Roadmap (Spring 2026) - AT Protocol Updates to the AT Protocol roadmap, including Permissioned Data and Account Experience.

We've got an updated protocol roadmap out, covering the next few months.

Look forward to seeing folks at AtmosphereConf later this week!

1 week ago 370 76 13 20
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Introducing Hubble: A Public Mirror for the Whole Atmosphere - AT Protocol 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.

Thrilled to be working with @bad-example.com, whom you know from the excellent @microcosm.blue tools, on making the atproto network ever more resilient

atproto.com/blog/introdu...

2 weeks ago 385 101 20 27
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Working to Decentralize FedCM - AT Protocol 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.

We're so excited to support @thisismissem.social's work bringing FedCM to the open social web!

atproto.com/blog/working...

3 weeks ago 188 33 10 8
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GitHub - graze-social/personalization: Graze Personalization Engine Graze Personalization Engine. Contribute to graze-social/personalization development by creating an account on GitHub.

And as a bonus, they open-sourced their personalization engine

github.com/graze-social...

1 month ago 36 3 0 1
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For You, For Everyone - Graze Newsletter How Graze built a "composable personalization" engine for the open social web — and why it matters right now.

Cool new feature from the @graze.social team: add personalization to your feeds. Lots of details about their approach to "composable personalization" in this post

graze.leaflet.pub/3mgascfb6uc2e

1 month ago 111 17 2 1

Hey devs! Heads up, we're planning on making some changes to our image CDN tomorrow.

- Images will be served as WebP by default
- The URL format you get from the Bluesky API will change a little

You can look forward to an announcement about image quality soon 👀

1 month ago 314 45 40 53
proposals/0013-service-auth-refs at main · bluesky-social/proposals Bluesky proposal discussions. Contribute to bluesky-social/proposals development by creating an account on GitHub.

XRPC requests between atproto servers are authenticated using JWTs. There are some inconsistencies in how OAuth permissions, PDS proxy headers, and JWTs all represent the "audience" of these tokens.

This proposal gives background and describes a rough solution.

Looking for rapid feedback!

1 month ago 113 22 5 2
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Amazing this all started with a question from @danielroe.dev

1 month ago 24 1 5 0
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Supporting the npmx Alpha Launch - AT Protocol The launch of npmx is an incredible showcase for how open source communities can build quickly on top of atproto.

It has been so exciting to see @npmx.dev come together over the past month. We're proud to offer our support — this project is just getting started. Congrats on the launch!

atproto.com/blog/npmx-al...

1 month ago 157 26 3 9

Congratulations to the @tangled.org team! It's exciting to see the next generation of social coding built on atproto.

1 month ago 140 12 0 1
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PLC Read Replicas - AT Protocol Introducing a self-hostable did:plc read-replica service

We've released a self-hostable reference implementation of a PLC read-replica service to make the Atmosphere ever more decentralized. @retr0.id has details on what this all means.

atproto.com/blog/plc-rep...

1 month ago 361 80 10 13

For more details, check out this post by our very own @alex.bsky.team on the new atproto blog.

atproto.com/blog/new-sit...

1 month ago 70 8 2 1

We've been hard at work on a new website with new guides, better docs, more translations, even our very own blog. We think it looks pretty sharp, too. It's now easier than ever to just build things with AT Protocol.

atproto.com

1 month ago 555 131 17 36

This transition is now complete.

The 'bsky.network' firehose and jetstream instances are all functional. Connected services should have transitioned smoothly, though in some situations may require a restart.

2 months ago 317 45 7 8

Having some difficulties during cutover that are affecting Relay consumers. Should be resolved shortly.

2 months ago 99 13 2 1
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いよいよ今日です!

あと1時間ほどで、データ伝送路を新しい中継システムに切り替える準備を進めています

2 months ago 59 13 3 0

This is today!

Preparing to cut over the firehose to a new relay in the next hour or so.

2 months ago 190 33 4 10
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Upcoming Relay Transition | Bluesky In coming days we are finally going to transition the bsky.network firehose endpoint to a newer relay implementation. This should not have a significant impact on most consumers.

「bsky.network」で提供されている人気のファイアホースサービスが、いよいよ今週火曜日にアップグレードされます。

PDSオペレーター、ファイアホース利用者、Jetstreamユーザーへの影響は最小限に抑えられる見込みですが、詳細については全文をご確認ください。

2 months ago 116 38 5 6
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Upcoming Relay Transition | Bluesky In coming days we are finally going to transition the bsky.network firehose endpoint to a newer relay implementation. This should not have a significant impact on most consumers.

The popular firehose service at 'bsky.network' is finally going to be upgraded this coming Tuesday.

The disruption to PDS operators, firehose consumers, and jetstream users should be minimal, but read the full post for all the details.

2 months ago 328 83 7 10
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@proto @fosdem · Luma The AT Protocol is an open, decentralized network for building social applications. https://atproto.com/ Start your FOSDEM with a convivial evening of casual…

We're having an AT Proto gathering at FOSDEM, on the Friday right before, at 17h00. Come! It'll be nice and fun.
luma.com/jj7nths0

2 months ago 67 25 2 6
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Introducing Tap: Repository Synchronization Made Simple | Bluesky Just about every app built on AT needs data from a repository at some point. For many use cases – feed generators, labelers, bots – streaming live data through a Relay or Jetstream works well. But som...

We just released Tap, a tool designed to handle the hard parts of repo synchronization, so you can focus on building your application.

It's now easier than ever to stay up to date with Atmosphere records for dev, data analysis, or any other task at hand!

docs.bsky.app/blog/introdu...

3 months ago 318 47 14 11
An Unofficial Guide to Participating in the IETF

if you are new to the IETF, the link below is a good overview of the overall process, including getting set up on the mailing list.

AT (atproto) is still in the process of forming a working group, and coming to consensus on what the charter should look like.

3 months ago 46 4 1 0

interested in standardization of AT at the IETF?

there are ongoing discussions happening on the mailing list, and there will be a video call this Wednesday to discuss the scope of work, especially around DIDs and identity.

more details in this email thread: mailarchive.ietf.org/arch/msg/atp...

3 months ago 211 37 3 0

We're presenting this scheme so that software engineers can comment on potential concerns or weaknesses. If you'd like to share feedback, please use this github discussion: github.com/bluesky-soci...

4 months ago 71 9 2 0
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Request For Comments: A secure contact import scheme for social networks | Bluesky This article outlines plans for a future Bluesky feature \- it doesn’t exist yet\! By sharing our ideas early, we hope to solicit feedback from the community.

"Find friends by phone" is a common tool in social networks. We're proposing a secure scheme and requesting comments from the dev community.

Goals:
・Double opt-in: you're not findable by your phone unless YOU use the tool
・Secure to enumeration attacks
・Resistant to decryption if compromised

4 months ago 436 89 88 101
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Squeeky Board with Paul and Jim
Squeeky Board with Paul and Jim YouTube video by Paul Frazee

Recently we hired @jimray.bsky.team as a new devrel at Bluesky, and I wanted to give him an overview of the Atmosphere. We recorded the session!

I give you: Squeeky Board with Paul and Jim, a detailed overview of AT://

4 months ago 230 32 15 9
PLC Operational Updates (October 2025) · bluesky-social atproto · Discussion #4316 Our near-term roadmap for PLC involves implementing a fully-validating read-replica service. It’s important that replicas agree on which PLC operations are valid and which are not. Due to past bugs...

the operations to be removed have been publicly archived, and the changes can be independently verified.

we plan to execute this change in roughly a week (no sooner than 2025-11-06).

you can read more in this github announcement.

5 months ago 58 2 1 1

for folks working with the PLC identity system:

we are planning to remove a set of non-compliant operations from the directory, which should make it easier to implement replicas and audits. these are predominantly test operations created by security researchers.

5 months ago 219 25 9 5