HardStack.AI builds documentation engines for regulated software.
We are based in San Francisco. Carbon is the first product: a generation layer that sits between engineering workflows and regulatory submission. The company is named for materials that do not fail quietly. The products are too.
What we believe
“Almost compliant” is a shipping blocker, not a status. Documentation that arrives at week 13 is how products miss windows, how audits find gaps, and how enterprise deals stall on a questionnaire.
AI that cannot show its work does not belong in a submission. Carbon isolates LLM calls to authoring, then scores output with deterministic rules. Humans still sign.
Where we are
Carbon is in customer trials across life sciences, healthcare IT, fintech, government software, and scientific / AI teams. It is not general availability. Pricing is contact-only. Company attestations (SOC 2, ISO 27001, BAA) are in progress and not claimed.
Tungsten and Kevlar are named suite products. They are not for sale yet.
Talk to us
If you have a filing, an audit, or a questionnaire that is blocking a ship date, start with Carbon.