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Claude Code

Claude in your terminal. Reads, writes, and runs code on your actual machine.

Claude Code is a CLI that lets Claude do real work on your machine. You install it once, then run claude inside any project folder.

The difference from claude.ai:

  • Claude.ai can describe how to write a file.
  • Claude Code actually creates it.

Claude Code can read your project files, run tests, edit code across multiple files, use Git, run shell commands. You're still in control — it asks before destructive actions — but it can act, not just advise.

Mosaic's Builder path (and the back half of Apprentice) uses Claude Code. Install walkthrough is Chapter 0-3.

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