Claude guide
Claude models and Claude Code, the agentic terminal coding tool.
- Claude overview What Claude is, the surfaces it ships on, and where this guide goes next.
- Claude Code The agentic terminal tool — the loop it runs, how to start it, and the workflow that gets the best results.
- Commands Slash commands in Claude Code — the built-in ones you will use daily, and how to write your own.
- CLAUDE.md Project instructions, the memory file. What it is, what belongs in it, and how the agent loads it.
- Skills Reusable, auto-invoked procedures for Claude Code — how they differ from slash commands and when to build one.
- MCP The Model Context Protocol in Claude Code — connecting the agent to external tools and data safely.
- Limitations What Claude and Claude Code are bad at today, and the workflows that compensate.
- Security The do/don't list for using Claude and Claude Code safely on real projects.