ThumbGate

ThumbGate is a safety gate system designed to stop AI coding agents from making costly errors like deleting files, leaking secrets, or deploying broken code. It intercepts tool calls before they execute, allowing teams to catch and prevent mistakes at the boundary rather than after the fact.

The product works by capturing feedback on agent actions, ranking lessons from failures, and enforcing hard allow/deny rules on subsequent tool calls. It runs locally first and offers both a self-serve tier ($19/mo) for teams that know their failure patterns, and a $499 diagnostic service that maps one expensive failure and installs a configured gate with proof within two business days. The maker indicates it was built with Claude Code.