Config Drift Checker: CI for your Claude Code setup

I measured what my Claude.md, skills and hooks are worth

Config Drift Checker is a tool that turns your coding-agent setup — CLAUDE.md, skills, hooks — into test cases and runs them against the real agent, so you know when a model change, a Claude Code release, or a teammate's edit breaks what your setup should do. It scores every run, diffs against your baseline, and alerts you via PR comments or Slack. Ablation runs reveal what each skill or hook is actually worth, and generated cases start from your existing configuration. It runs on your machine and CI, sending nothing anywhere.