Co vs INT21

Every AI coding agent signs its commits with a forgeable plain-text line.

We are building self-improving AI systems for the software beneath modern AI. Our first product generates and optimizes low-level GPU software, then proves its work with...

About Co

Every AI coding agent signs its commits with a forgeable plain-text line. Co-authored-by is a Lie: Cryptographic Provenance for AI Coding Agents . It matters now, because the attribution metadata is starting to be used to make trust decisions, and that turns a cosmetic line into an attack surface. Commit metadata has always been trivial to fake unless signing is enforced. So over a couple of evenings I built the missing half: a producer-attribution layer where attribution is backed by a hardware key, enforced automatically, and verifiable .

About INT21

We are building self-improving AI systems for the software beneath modern AI. Our first product generates and optimizes low-level GPU software, then proves its work with tests and benchmarks. Today, we are launching INT21: the first company to achieve self-improving AI agent swarms, applied to AI infrastructure. That software has an outsized effect on speed and cost. The first four implementations produced by PTX Kernel Factory are open source today. The product is also entering beta, with early access available at int21.ai.