LeanDB: Theoric Labs builds a strongly typed Lean frontend for SQL databases
hargup13 · x · 2026-09-14
Theoric Labs introduces LeanDB, an experiment premised on the idea that agentic AI plus formal methods can make software fast and bug-free. The system describes data and its properties in Lean while using SQL databases for storage and querying.
Key points:
- Lean types go beyond basic checks: properties become propositions with machine-checked proofs
- Expressing a property doesn't auto-prove it, but precisely states what must be established
- A café menu example demonstrates typing product data in Lean
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