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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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MicrosoftCLAUDE.md

playwright-mcp

microsoft/playwright-mcp/CLAUDE.md

The MCP server source lives in microsoft/playwright, in packages/playwright-core/src/tools/. This repo ships @playwright/mcp: cli.js and index.js run the server from the playwright-core alpha that package.json pins. config.d.ts is a copy of the upstream file, and npm run lint generates the tool list in README.md. There is no build step. Tests are in tests/*.spec.ts, with test and expect from ./fixtures. The client fixture is an MCP client that runs cli.js over stdio, startClient() starts one with args or a config, and…

Steady6 mentions in 2 weeks

No other project uses it yet

39k14d agoReviewMountCreate a free account to mount
MicrosoftCLAUDE.md

vcpkg

microsoft/vcpkg/CLAUDE.md

No summary in the file. Open it to read it.

153 projects use a version of this

28k19d agoReviewMountCreate a free account to mount
MicrosoftCLAUDE.md

playwright-cli

microsoft/playwright-cli/CLAUDE.md

The CLI source lives in microsoft/playwright, in packages/playwright-core/src/tools/. This repo ships @playwright/cli: playwright-cli.js runs the CLI of the playwright-core alpha that package.json pins, and adds the update check, with skillCheck.js. skills/playwright-cli/ is a copy of the skill that playwright-cli install --skills writes, and node scripts/update.js refreshes it. There is no build step and no lint. Tests are in tests/integration.spec.ts. They run playwright-cli.js with runCli() in the output directory of the test, and the npmRegistry fixture serves a fake registry for…

15k7mo agoReviewMountCreate a free account to mount
MicrosoftCLAUDE.md

presidio

microsoft/presidio/CLAUDE.md

No summary in the file. Open it to read it.

1 project uses a version of this

12k7d agoReviewMountCreate a free account to mount
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.