PRGuard

PRGuard is a GitHub/GitLab app that automatically blocks pull requests likely to cause outages, security regressions, or painful rollbacks. It runs a deterministic rule engine (dependency changes, config edits, infra files, auth paths, migration scripts) plus an AI reviewer that summarizes risk, flags suspicious patterns, and demands missing evidence (tests, rollout plan, feature flag, migration safety). It integrates with CI to require specific checks when certain files change (e.g., touching Terraform requires a plan artifact; touching auth requires security tests). Teams can start with opinionated presets (SaaS backend, mobile, infra) and then tune policies per repo. The goal is not “better code review”; it’s fewer production incidents caused by rushed PRs. Realistically, it will only win if it’s fast, low-noise, and easy to adopt—developers will uninstall anything that nags without being right.