Claude Code Project Structure: Every File and Folder Explained

Most Claude Code projects start with a CLAUDE.md and nothing else. Here's the full structure that turns Claude from a coding assistant into an engineering partner.

Table of Contents

• Why Structure Matters
• The Complete Directory
• File-by-File Breakdown
• 1. CLAUDE.md …

Claude Code is not a chatbot. It lives in your terminal, reads your actual files, writes code, runs commands, and executes multi-step workflows — all with your permission. Here are 30 concepts you need to understand it properly. No fluff, no hand-holding.

The 30 Concepts

1. The Terminal — Claude Code doesn't …