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The claude.md file decides if Claude Code ships the right implementation. Running init isn't enough for a real claude code setup. We compiled the best claude.md setup patterns from Karpathy and hours of testing, plus claude code tips that stop you fighting your agent on every task. Skip the setup headache get started with Klaus here: https://klausai.com/r/Mv1e2 Community with All Resources 📦: http://ailabspro.io Video Code: V57 We're building The Roundup — a daily newsletter covering the AI stories that actually matter. Join now at: https://www.theroundup.so/ In this Claude Code tutorial we walk through how to create claude.md file the right way, with claude.md best practices pulled from Andrej Karpathy's skills repo and our own hours of running Claude Code from Anthropic on real projects. If you want to know how to structure claude.md so your agent stops guessing and actually ships the right code, this is the full playbook. We cover the karpathy claude.md patterns first: think before coding, simplicity, surgical changes, and goal-driven execution. Then we go into the parts that come from shipping day after day, including tool overrides, scoped rule files, project description placement, Git commit safety, and the order your instructions need to follow inside the claude.md file. We also cover scoped claude.md for monorepos, why verification matters before reporting a task complete, and the 300 line limit that keeps agent performance high. Want to sponsor a video? Learn more here: https://ailabs.services/ This is the best claude.md setup we have landed on after building with Claude AI and testing every pattern that has come out of the community. If you want to configure claude.md file to start a project the right way, or you are doing any vibe coding with Claude Code, this claude code claude.md guide will save you hours of course-correction. It pairs cleanly with the workflows we have covered around Claude Skills and the wider Anthropic agent stack. 0:00 Intro 0:46 Think Before Coding 1:57 Simplicity First 3:03 Surgical Changes 4:25 Goal Driven Execution 5:48 Tool Overrides 7:02 Update claude.md as You Build 7:43 Sponsor 8:35 Git Commit Safety 9:17 Path Scoped Rule Files 10:13 Scoped claude.md for Monorepos 11:18 Project Description First 11:45 Verify, Don't Just Check 12:22 Order by Priority Hashtags: #claudecode #claude #ai #claudeai #claudecodetutorial #claudeskills #vibecoding #anthropic #claudemd