CLAUDE.md examples from real projects

How real projects brief Claude Code: the commands, conventions and warnings they put in CLAUDE.md.

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szlay

szlayReads credentialsCLAUDE.md

roblox-base

szlay/roblox-base/CLAUDE.md

Base environment for building Roblox games with Claude Code. Local development, Rojo file sync, Studio's built-in MCP for feedback. The user is not a developer and does not know Roblox. This shapes everything: - Solve anything technical yourself. Do not ask the user to run commands, edit config, or make technical choices you can make. - Do ask about gameplay, looks, and rules — that is the user's domain and only they can answer it. - Ask about technical matters…

14mo agoReviewMount

CLAUDE.md vs AGENTS.md

About CLAUDE.md

What is CLAUDE.md?

A file Claude Code reads at the start of every session. It holds the commands, conventions and warnings the agent needs for this project.

Where does it go?

At the repository root. Claude Code also reads CLAUDE.md files in subdirectories when it works there.

What should it contain?

Build and test commands, the project's layout, conventions that aren't obvious from the code, and mistakes to avoid. Short files tend to work better than long ones.

CLAUDE.md or AGENTS.md?

Claude Code reads CLAUDE.md; most other agents read AGENTS.md. Many projects keep one and point the other at it.