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Icecream and Deb

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

Icecream and Deb — Demo video

Icecream Sheets is a spreadsheet re-architected around a single idea: the calculation engine is completely separate from storage, and separate from the screen. The engine projects a typed view over whatever storage sits underneath — a spreadsheet file, a SQL database, an API, a dataframe — and computes over that view. Same formulas, same deterministic results, no matter where the data lives. The grid you see is just one consumer of the engine. The other one is an AI agent. Agents talk to the engine through a versioned MCP server: they read and write cells, set formulas, trigger recalculation, and retrieve results — all through MCP, never through screen scraping. Recalculation is deterministic and kept separate from permissioned automation, so what the agent computes is exactly what the sheet shows. No drift, no surprises. A deployed version can be seen here: https://office.deb0.com/ Please note that the deployment could be stale / work in progress.

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