claude.md and README.md Explained — Every Way to Use Them in Claude (2026)
claude.md is the instruction layer that controls how Claude
behaves across your entire project. Most Claude users have
never written one. This is the complete guide — what it is,
how it differs from Skills files and README.md, and 4
different ways to implement it depending on your use case.
I build a complete claude.md live on camera for a freelance
consultant project — watch the before/after output difference.
📖 Read the full written guide:
→ https://replacewithclaude.beehiiv.com...
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🎁 FREE: The Claude Business Stack
10 prompts that replace your most expensive business tasks:
→ https://replacewithclaude.beehiiv.com/
🏘️ Join the Replace With Claude community (founding pricing):
→ https://www.skool.com/replace-with-cl...
🛠️ TOOLS USED
→ Claude.ai: claude.ai
→ Claude Projects (free with Claude account)
→ Claude Code (free): claude.ai/code
📌 CHAPTERS
0:00 Same prompt, completely different behavior — here's why
0:16 claude.md vs SKILL.md vs README.md — what each one does
2:50 The 4 use cases for claude.md — pre-built walkthrough
4:25 Live build — claude.md for a freelance consultant
6:25 README.md for Claude Code — pre-built walkthrough
7:05 The 3 most common mistakes
7:50 Outro + free resources
Affiliate disclosure: Some links above are affiliate links.
I earn a commission if you sign up — at no cost to you.
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