Prompt Cache Audit Skill

Trigger: /cache-audit or "audit my caching" or "check my cache setup" or "am I breaking the cache?"

What it does: Reads your live Claude Code configuration and checks it against the 6 prompt caching rules from Anthropic's engineering team. Returns a scored report with specific, actionable fixes.

Reference: Based on Thariq Shihipar's thread "Lessons from Building Claude Code: Prompt Caching Is Everything"

When Invoked

Run all checks automatically. Do not ask for confirmation. Read the relevant files and produce the full report in one pass.

The 6 Checks

Check 1 — Prompt Ordering (Static Before Dynamic)