Antigen

Antigen is a continuous penetration testing platform driven by an autonomous agent. Instead of a scheduled engagement, its agent, called tCell, maps an organization's attack surface, chains exploits together the way a real attacker would, and reports each vulnerability with a working proof of concept exploit. It then opens remediation pull requests and retests once a fix ships, so verification is part of the loop rather than a separate report. It is aimed at software companies that ship frequently, regulated sectors such as financial services and healthcare, and public sector teams where auditability matters. Findings and fixes flow into GitHub and Linear. Infrastructure mapping connects to AWS, GitHub, Vercel, Supabase and a further set of platforms, so the agent understands what is deployed and where. Customers can run Antigen managed or self hosted, and enterprise controls include SAML with an identity provider, audit trails, an API and SDK, and data retention settings. A dedicated security expert is part of the offering. Antigen does not publish pricing. The pricing route on the site resolves to the sign in page, and quotes are arranged through the company. The product should be assessed as an offensive security service with an automated core, not as a scanner. Its distinguishing claim is reproducible exploits with remediation attached, and buyers should confirm scope and rules of engagement for their environment before enabling autonomous exploitation.