MySky opens Bluesky's recommender: 60K DAU can inspect and control the ranking pipeline
dhadfieldmenell · x · 2026-09-27
- MySky (formerly GreenEarth), built by Jonathan Stray's team, is an open-source algorithmic feed running on Bluesky with over 60,000 daily active users.
- It exposes the entire ranking pipeline normally hidden inside platforms: candidate generation, engagement-prediction ranking, and MMR diversification are all visible in a settings panel, with all of ATProto indexed.
- An API supports multiple candidate generators, letting independent feed developers build state-of-the-art personalized recommendation without big-platform ML resources.
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