Your CLAUDE.md has zero tests. Here's what happened when I broke mine on purpose.

Description and use

<p>Claude Code shipped roughly 25 releases last month. My setup, 400 lines of <code>CLAUDE.md</code>, four skills and a guard hook, had exactly zero tests against any of them.</p> <p>That bothered me, because this configuration has behavior, and behavior breaks. A new model version ships and suddenly a skill stops triggering. Nothing errors. Nothing goes red. The agent just quietly stops doing the thing you taught it, and you notice three weeks later when the code review comes back weird.</p> <p>So I built CI for it: <a href="https://github.com/jameskomo/config-drift-checker" rel="noopener nor

Problem

<p>Claude Code shipped roughly 25 releases last month. My setup, 400 lines of <code>CLAUDE.md</code>, four skills and a guard hook, had exactly zero tests against any of them.</p> <p>That bothered me, because this configuration has behavior, and behavior breaks. A new model version ships and suddenly a skill stops triggering. Nothing errors. Nothing goes red. The agent just quietly stops doing the thing you taught it, and you notice three weeks later when the code review comes back weird.</p> <p>So I built CI for it: <a href="https://github.com/jameskomo/config-drift-checker" rel="noopener nor

Outcome

<p>Claude Code shipped roughly 25 releases last month. My setup, 400 lines of <code>CLAUDE.md</code>, four skills and a guard hook, had exactly zero tests against any of them.</p> <p>That bothered me, because this configuration has behavior, and behavior breaks. A new model version ships and suddenly a skill stops triggering. Nothing errors. Nothing goes red. The agent just quietly stops doing the thing you taught it, and you notice three weeks later when the code review comes back weird.</p> <p>So I built CI for it: <a href="https://github.com/jameskomo/config-drift-checker" rel="noopener nor

Evidence

Your CLAUDE.md has zero tests. Here's what happened when I broke mine on purpose.

Source