The Best CLAUDE.md Files for Claude Code: Templates That Actually Work If you have been using Claude Code without a CLAUDE.md file, you are leaving an enormous amount of capability on the table. The best Claude Code users treat CLAUDE.md less like documentation and more like a co-worker onboarding doc. Get it right, and Claude walks into every session already knowing your stack, your conventions, and your quirks. Get it wrong, or skip it entirely, and you are constantly re-explaining the same context. ...