keygate: A Fast Pre-Commit Guardrail Against Secret Leaks

Accidentally committing an API key, password, or private key is still one of the easiest ways to create a serious security incident. The problem gets worse as development speeds up: larger diffs, faster iterations, and more code being drafted by AI coding agents before a human reviews every line. That is why I built keygate : a lightweight Git pre-commit hook that scans only staged added lines and blocks likely secrets before they enter repository history. keygate is intentionally narrow in scop