The Ultimate CLAUDE.md Guide: 7 Golden Rules & Production Templates for Claude Code
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Published: November 2026 | ✍️ By MyTechDiary Editorial Team | ⏱️ 9 min read | π·️ Category: Claude Code & Developer Productivity Have you ever asked Claude Code to fix a quick bug, only to watch it hallucinate a non-existent build script, format files using the wrong linter, or ask you three unnecessary clarifying questions about your directory structure? The difference between a junior developer constantly battling their terminal agent and a 10x engineer who ships features unattended comes down to a single file at the root of the repository: CLAUDE.md . Because Anthropic's Claude Code starts with a fresh context window on every launch, CLAUDE.md is the permanent memory and behavioral contract of your project. But write too much, and you dilute attention and burn thousands of tokens. Write too little, and your agent wanders off into broken imports. In this definitive engineering guide, we break down the 7 g...