What is BlueSky authenticated Transfer Protocol (ADX)?

Bluesky was created to build a social protocol. In the spring, we released “ADX,” the very first iteration of the protocol. Over the summer we improved and simplified ADX’s design, and today we’re sharing a preview of what’s to come. ADX is now the “Authenticated Transfer Protocol” — or, more simply, the “AT Protocol.”

Will BlueSky's adX be a semi-public project?

It’s one of the most substantive windows into Bluesky’s workings since the project was conceived in 2019 and formally incorporated in early 2022. Bluesky CEO Jay Graber writes that ADX will be the start of a semi-public development process.

What is authenticated data experiment (ADX)?

The Authenticated Data Experiment (ADX), in mid-2022, was Bluesky's first early protocol release. It used personal data repositories, intended to be controlled by individual users, that social networks would optionally support.

Does BlueSky have a decentralized social media protocol?

On Tuesday, the Bluesky initiative launched a website for its decentralized social media protocol, which it’s calling The AT Protocol. It also opened a waitlist for the Bluesky app, which the team is framing as the ideal “browser” with which to access the AT Protocol network. The waitlist quickly filled up, requiring third-party intervention.