FalseGreen
Build correct Rust programs fast.
Your AI coding agent writes the code. FalseGreen verifies it in minutes.
The opportunity
“Probably the most important thing to get great results out of Claude Code — give Claude a way to verify its work. If Claude has that feedback loop, it will 2–3× the quality of the final result.”
Boris Cherny, creator of Claude Code —the post on X
The problem
Developers can't keep up with checking AI-written code anymore.
AI coding agents write code at machine speed. Human review cannot keep up — reviewing the code, not writing it, is now the slow step.
Most developers admit they do not always verify AI-generated code before committing it.
Leaders believe the code is production-ready, while production issues tied to it climb.
An AI coding agent can report work as complete that was never done — and nothing independent disagrees.
Equifax cost $1.4B — a disclosed fix that never reached the shipped software. Supply-chain compromise is now the #2-cost breach vector at $4.91M.
Who this is for
Teams shipping consequential Rust, at AI speed.
You ship crates, services, systems, or high-risk components — and AI coding agents carry real velocity.
You need an independent call on a release candidate, a migration, or a rewrite — not another reviewer.
You care what actually ships: release build, full test suite, lints, five security checks, and Kani and Creusot proofs where you freeze them.
A report anyone can re-verify offline, at any time — not “the agent said it was done.”
How it works
One FalseGreen Job. Minutes to a verdict.
The requirement is frozen before anyone is graded. Every check runs in a clean machine against the exact bytes — and the only thing that merges is what was accepted.
One FalseGreen Job
Build · full suite · clippy · formatting · five security checks · formal proofs — and a Failed verdict goes straight back to your AI coding agent, free, inside the same Job.
Products
Three products. One verdict.
The paid check — minutes, up to seven free rechecks, one verdict.
FalseGreen ReportVerdict, evidence, security findings, proofs — re-checkable offline by anyone.
FalseGreen GateMerge only what a FalseGreen Job accepted.
Watch it catch a bug 47 passing tests missed.
AI coding agent reports implementation complete after 47 passing tests. FalseGreen independently evaluates the frozen definition of done and returns Failed because a revoked refresh token can still mint a new session. The implementation is repaired and reverified against the unchanged boundary. FalseGreen returns Accepted for the exact revision.