If you’re using Claude Code, you’re probably familiar with CLAUDE.md, instruction files that tell Claude how to work.
You can have project-level CLAUDE.md files, which I often just have Claude curate itself.
You can also have a global CLAUDE.md that applies to all of your projects. Located at ~/.claude/CLAUDE.md (macOS/Linux) or C:\Users\<YourName>\.claude\CLAUDE.md (Windows), it loads automatically in every session.
I started from Jesse Vincent’s CLAUDE.md and have iterated since.