Claude Code

Account Types:

• claude.ai/Claude Account/chat account/iOS app
• Claude Developer Platform/Claude Console/Anthropic Console/platform.claude.com

Type / to get an autocomplete list of commands

• Models
  • Selecting: /model [sonnet|opus] - leave model out to check current one
  • Which to use
    • Sonnet: daily driver
    • Opus: expensive but powerful
• Write mode (shift-tab to toggle)
  • Normal: have to approve everything
  • Auto-accept edits
  • Plan mode (don’t write to files)
• Referencing files: @ prefix
• Thinking mode
  • Use phrasing like “think/think hard/think harder” (works in either Sonnet or Opus)
• Context windows
  • Will warn that auto-compact is coming soon
  • /compact - Manually compact in advance so you don’t lose context in the middle of something you need it for
  • /clear to fully clear context if done tasks
• Rules - CLAUDE.md
  • Put individual rules in here; not separate rules like Cursor
  • Can be at user level, project level, and in project subdirs
  • # command: create a memory and add it to the file
• Commands: a shortcut for a repeated prompt
  • Within it, ! interpolates a bash command
• Subagents
  • They have their own context window
  • So when you have parts of the work that require different kinds of context, have different subagents, one per role
• Misc
  • /init
  • /resume - pick up a conversation you left off in a previous run, can choose from a list

MCP

How to set up an MCP in Claude Code CLI. Per user:

claude mcp add playwright npx @playwright/mcp@latest -s user

Writes to ~/.claude.json, project-specific:

json { "projects": { "/Users/josh.justice2/apps/...": { "mcpServers": { "playwright": { "type": "stdio", "command": "npx", "args": [ "@playwright/mcp@latest" ], "env": {} } } } } }

Verify in a given Claude session with /mcp

Extensions

• Auto-export: https://github.com/jimmc414/cctrace