Anthropic

Bluesky's Attie: Claude-Powered Custom Feeds on AT Protocol

Bluesky's Attie is a standalone app powered by Anthropic's Claude that builds custom feeds from natural language on the open AT Protocol — your algorithm, your rules.

Bluesky's Attie: Claude-Powered Custom Feeds on AT Protocol — article cover

On March 28, 2026, at the ATmosphere developer conference, Bluesky unveiled Attie: a standalone social assistant powered by Anthropic’s Claude that builds personalized feeds and recommendation algorithms from natural-language descriptions. TechCrunch and TNW both stress that Attie is not a feature inside the Bluesky app — it is a separate product, currently in a private beta for conference attendees, with a public waitlist open.

The significance: “algorithmic choice,” the promise Bluesky has pitched for years, finally has an entrance that requires no code. With 43.4 million users and more than three years of runway from a previously closed $100 million round, the company is now using AI to deliver on its open-protocol commitments instead of treating it purely as a threat.

What Attie Is

The core interaction reads like talking to a chatbot. Type “show me electronic music and experimental sound from people in my network” and Attie generates a working custom feed; you can also ask which posts you might want to repost, or curate feeds around a topic you are tracking. Because the AT Protocol is an open data system, signing in with your Atmosphere account — any account from an ATProto app, including Bluesky — lets Attie immediately understand your interests and social graph across the whole ecosystem. There is no cold start, and no proprietary data moat standing between the assistant and the material it needs to do its job.

Feeds built in Attie will later be viewable inside Bluesky or any other ATProto app. Technically it is an agentic application: it acts on the protocol on your behalf rather than just answering questions.

Who Is Building It, and Why Standalone

Attie comes from a new team assembled by Jay Graber, Bluesky’s co-founder, who stepped back from the CEO role a few months earlier and now serves as chief innovation officer; she chose building over running the company, demoed the app alongside CTO Paul Frazee at the conference, and handed day-to-day leadership to Toni Schneider, a True Ventures partner serving as interim CEO. He told TechCrunch plainly: “It’s a new product — it’s not a part of the Bluesky app.”

The standalone structure turns Attie into a sandbox for agentic social experiments: the main Bluesky product stays untouched while Attie iterates fast. The roadmap runs from custom feeds toward letting users vibe-code their own social apps and build tools for others — the endpoint is a developer ecosystem growing on top of the protocol.

“AI Should Serve People, Not Platforms”

Graber’s announcement took aim at incumbent platforms: they use AI “to harvest training data, and to shape what users see and believe through systems they can’t inspect,” and they “aren’t trying to fix” the degradation of the feed. Her counter-position is compact: “We think AI should serve people, not platforms,” and “an open protocol puts this power directly in users’ hands.”

Schneider’s version is more pragmatic: “You control it, you shape it, without having to write code or know how to set up these feeds.” Against black-box recommender systems, Attie is the cleanest possible control group: the same AI-driven ranking, except the rules are yours and inspectable.

Limits and What Comes Next

The limits are equally clear. Monetization is undecided, with subscriptions and hosting services floated as possibilities; despite crypto-heavy investors, Bluesky says there will be no crypto integration. Privacy controls still need to move down into the protocol layer before agentic features can scale — an agent that reads your graph and acts for you raises questions the transport has to answer, not just the app. Schneider likens the Atmosphere’s potential to WordPress’s decentralized ecosystem, which he says generates more than $10 billion a year, and frames Attie as “the beginning of just having a lot more people be able to build on top of the Atmosphere.”

For developers and product teams, three things to watch: when Attie moves from waitlist to general availability, since the private beta currently reaches only conference attendees; whether feeds genuinely work across every ATProto app rather than just inside Bluesky; and whether “generate an algorithm in natural language” becomes the standard counter-move open platforms make against opaque recommenders. If it does, the interesting follow-on is a services layer — shared feed templates, curation tools, maybe hosted feed infrastructure — which is exactly the shape of business WordPress grew around itself.

Sources

AI-assisted summary compiled from the sources above, reviewed by a human before publishing.

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