Bluesky team launches Attie, an AI assistant for building your own feed algorithm

The team behind Bluesky has announced Attie, an AI app that lets any user build a personal feed algorithm in natural language, without writing a single line of code. At the Atmosphere conference, which focuses on the AT Protocol ecosystem, former Bluesky CEO Jay Graber and CTO Paul Frazee presented Attie. The app runs on Anthropic's Claude model and is built on the open atproto protocol, the same one that underpins the entire Bluesky ecosystem and gives it its decentralized architecture.

The idea is simple, but it could change a lot. The user writes a request in everyday language, for example "Show me posts about folklore, mythology and traditional music, especially Celtic traditions," and Attie creates a separate custom feed for that request. No code, no manual settings: you just explain in your own words what interests you, and the algorithm assembles itself.

This is a fundamentally different approach to personalization from the one we are used to. Most social networks run closed algorithms that decide for themselves what to show, based on behavioral data such as views, likes and time on screen. The user stays a passive consumer: content is picked from past actions, not from explicitly stated preferences. Attie flips that logic: you tell the system what you want.

Bluesky has bet on transparency from the start. AT Protocol is open, and custom feeds have long been one of the platform's key features: technically skilled users could build their own algorithms and share them. Attie removes the last barrier: now anyone who can put their thoughts into text can create a personal algorithm.

At first, custom feeds will be available only inside the standalone Attie app. However, the team intends to gradually integrate them into the main Bluesky client and other apps built on atproto. That means the whole ecosystem on top of the open protocol, not just Bluesky itself, will be able to use feeds created by users.

The choice of Anthropic's Claude as the engine is not accidental. The company is actively developing tools for developers who embed AI in their products, and Claude shows high quality on nuanced requests. That is exactly what is needed to interpret a description like "posts about Celtic music" correctly and not mix it up with similar but irrelevant content.

Attie arrives amid growing demand for algorithmic transparency. After several years of criticism of the recommendation systems of Twitter/X, TikTok and Instagram, users increasingly want to understand why they are shown particular content. Regulators in the EU already require large platforms to disclose how their algorithms work. Bluesky holds a unique position: here transparency is not an exception made at a regulator's request but an architectural principle from day one. If open, AI-based algorithms take hold as the norm in the atproto ecosystem, that could change what users expect from social networks in general, and put pressure on closed platforms.

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