Charlie HillsGuide · Claude & Claude Code
The Six-Month Audit: find every instruction in your Claude setup that the new models outgrew
Anthropic's own team deleted 80% of Claude Code's system prompt when Opus 5 shipped and it got better. This is the audit that finds what yours should lose: 7 delete checks, 5 add checks, every one traceable to a line in Anthropic's live docs. Includes the installable skill and a paste-able version for anyone who does not use Claude Code.
Added 7 August 2026. Free.
What’s inside
- 1. Why this exists
- 2. The one rule that keeps this working
- 3. The delete pass
- 4. The add pass
- 5. Three ways to run it
- 6. What happened when I ran it on mine
- 7. Tactics worth knowing
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