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Getting started

One at a time. Tell it whether you knew, and the ones you did not stay in your pile.

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/init writes a first CLAUDE.md for you.

Run it once in a new repo, then trim the result by hand. With CLAUDE_CODE_NEW_INIT=1 it becomes an interview that also offers skills, hooks and personal memory files.

/init
The whole topic8

  • /init writes a first CLAUDE.md for you.

    Run it once in a new repo, then trim the result by hand. With CLAUDE_CODE_NEW_INIT=1 it becomes an interview that also offers skills, hooks and personal memory files.

  • A line that starts with ! runs as a shell command inside the session.

    The output lands in the conversation, so Claude sees it without any copy and paste.

  • @ followed by a path puts that file into your prompt.

    It is faster and more exact than describing where something lives. A ? on an empty prompt lists the other prefixes.

  • You can pipe any output into a one-shot Claude run.

    The piped text is the context, so Claude needs no Bash permission to read it. git diff main | claude -p "..." works the same way.

  • /import moves your setup over from Codex, Gemini or Cursor.

    It migrates instruction files and MCP servers, so switching tools does not mean retyping them.

  • Claude Code reads your AGENTS.md when no CLAUDE.md exists.

    If both exist only CLAUDE.md is read, unless CLAUDE.md imports AGENTS.md. An @AGENTS.md line lets two tools share one file.

  • claude --safe-mode starts with every customization switched off.

    When something behaves strangely, one launch tells you whether CLAUDE.md, a skill, plugin, hook or MCP server is the cause.

  • Settings files are strict JSON, and one trailing comma stops startup.

    Claude Code shows a Settings Error dialog. Add a $schema line so your editor catches the mistake before you do.