v10

Claude Code — Command Reference

Summary — what this page covers A quick-reference of how to install and operate Claude Code across all three surfaces (terminal, VS Code, JetBrains) plus the CLI and in-session slash commands used across Day 1. Keep it scannable — attendees will pin this. Fill in one-line descriptions and group as below.

Install & operate across surfaces

Surface Install Operate
Terminal npm install -g @anthropic-ai/claude-code (Windows: in WSL2) claude (REPL) · claude "prompt" (one-shot)
VS Code code --install-extension anthropic.claude-code Inline diff review · "Add to Claude Code context" · clickable permission UI
JetBrains (Rider/IntelliJ) Marketplace → "Claude Code" → install → restart Uses the JetBrains merge tool for diff review

Same agent, same .claude/ config (CLAUDE.md, rules, skills, hooks) on every surface — only the diff/permission UI differs. Authenticate once: claude (OAuth) or ANTHROPIC_API_KEY.

Starting & running

Command Does
claude Start the interactive REPL
claude "prompt" One-shot mode
claude --help Full command reference
claude --continue Resume the previous session
claude --resume <id> Resume a specific session
claude --plan Start in plan mode

In-session (slash commands)

Command Does
/help In-session help
/init Generate a starter CLAUDE.md from the project
/memory Show which CLAUDE.md / rules are currently loaded
/add-file <path> Add a file to context
/compact Summarize the conversation and continue
/clear Clear context between tasks
/undo Undo the last change
/plan Switch to plan mode mid-session
/desktop, /teleport Hand off the session to desktop / web
# (key) Append an instruction to CLAUDE.md on the fly

MCP servers (Section 3)

Command Does
claude mcp add <name> ... Register an MCP server
claude mcp add --transport http <name> <url> --header "Authorization: Bearer ..." Register a remote (HTTP) server with auth
claude mcp list List configured servers and connection status
claude mcp get <name> Show a server's configuration
claude mcp remove <name> Remove a server

GitHub (Lab 3): claude mcp add --transport http github https://api.githubcopilot.com/mcp/ --header "Authorization: Bearer ghp_..." then verify with claude mcp list.

The .claude/ directory at a glance

.claude/
├── rules/        # path-scoped conventions (paths: globs)
├── skills/       # skill FOLDERS, each with a SKILL.md
├── agents/       # subagents — markdown + YAML frontmatter
├── commands/     # custom slash commands (saved prompts)
├── hooks/        # hook scripts
├── settings.json # hook registration, permissions
└── plugins/      # bundled, shareable setups