A complete guide to CLAUDE.md, custom commands, skills, agents, and permissions, and how to set them up properly.

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Daily Dose of Data Science | Avi Chawla | Substack

A comprehensive guide to the .claude/ folder structure used by Claude Code. Covers CLAUDE.md (the main instruction file), CLAUDE.local.md for personal overrides, the rules/ folder for modular scoped instructions, commands/ for custom slash commands with shell injection, skills/ for auto-invoked reusable workflows, agents/ for specialized subagent personas with isolated context, and settings.json for permission control. Also explains the global ~/.claude/ directory for cross-project preferences and session memory. Includes a practical step-by-step setup progression and a full folder structure reference.

Anatomy of the .claude/ Folder

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<p>This is a really helpful breakdown. Understanding how to structure rules, commands, and agents properly makes it much easier to keep Claude workflows clean and reusable across projects.</p>
