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Hive

Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

Hive — Demo video

Hive is a coordinator for teams running several AI coding agents on the same TypeScript repo. The problem is simple and painful: two agents each do their task correctly, the code still compiles, and the result is wrong. One changes getPrice to return cents, the other formats the same value as dollars. Nothing catches it until a human does. https://hive-hack-production.up.railway.app Access Token: b69a94526d79dd753e524d889ae76d459a39bfe88746ebfa Each agent connects to a shared Hive hub and declares what it is about to change: files, symbols, and the assumptions it is making. Hive checks every teammate's in-progress work together with the TypeScript compiler and a set of deterministic rules, and warns an agent before it writes code that would break someone else. For conflicts that type-check but disagree in meaning, Hive asks Muse Spark to read the intents, the real declarations and the diffs, explain the disagreement, and propose one explicit interface. Both agents then sign a versioned agreement we call a Ghost Contract. It moves through proposed, accepted, implemented and verified, and it only becomes verified when a real test passes on the real code. The model proposes; our code validates and executes. Nothing the model says is run as a command. What exists today: a hosted hub, a one-command connect flow with browser pairing (no tokens to paste), a dashboard that shows every agent, finding and agreement,

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