Private by design

Each person sees and does only what they are allowed to, and every change is recorded with who made it.

Part of What you get when your model writes LMAT..

uzi@coverable.ai

The whole tree

• The first language designed for AI to write.: Your model writes LMAT. A compiler checks every line before it runs.
• AI writes code faster than anyone can review it.: Review is the new bottleneck.
• Twice the code, twice the review: Measured across more than 10,000 developers by Faros AI.
• Checked before it runs.: The model writes, the compiler checks, it runs.
• One request, start to finish: A request, a refusal in the checker’s own words, a repair.
• Real software, built on LMAT.: LMAT makes them work. The design is free.
• Software: Accounting, an issue tracker and a design tool.
• Games: Rocket-car soccer and a block world.
• What you get when your model writes LMAT.: Six things that hold for every program.
• Checked before it runs: 202 kinds of mistake, each named with the line and the fix.
• It tests itself: Every button pressed and every form filled, as every user.
• The same answer everywhere: It runs the same on every machine.
• It can’t reach what it shouldn’t: No other customer’s data, no web addresses, nothing that runs forever.
• Private by design: Each person sees only what they are allowed to.
• No escape hatch: There is no way around the checks.
• Built for agents too.: lmatfs, the storage layer for AI agents.
• lmatfs: Rust, with Python bindings.
• Measured, not claimed.: Counted from the LMAT repository on 5 October 2026.
• 202 kinds of mistake caught: Each named with the line, the field and the fix.
• 5,635 tests passing: Across the engine, the sandbox and the renderer.
• 36 attack programs run before every merge: Programs that try to break out of the sandbox or steal from it.
• Same requests, before and after LMAT tested each app: 23 requests, September 2026: three broke, then none.
• Who is building it: Two founders out of Carnegie Mellon.
• The team: Uzi Isman and Jason Shen.
• Talk to us.: We’re raising, and we work with AI companies.