Claude Code Desktop: Built-in Browser and auto-fixing /doctor command (Week 28 update)

What's new

• Built-in Browser: New panel directly in the desktop app — Claude opens documentation, mockups or any webpage and interacts with it (clicking, forms, Google OAuth pop-ups). Activation: Cmd+Shift+B (macOS) / Ctrl+Shift+B (Windows) or Views menu.
• Sandboxed environment: Security classifiers monitor actions on external sites; configurable session persistence.
• /doctor auto-fix: Command now not only diagnoses but fixes — unused skills and MCP servers, CLAUDE.md duplicates, slow hooks. Shows findings and asks for confirmation before changes.
• /doctor CLAUDE.md optimization: Suggests trimming CLAUDE.md to items Claude cannot infer from the code itself.

Why it matters

The built-in browser closes the gap between coding and verifying results online — Claude can autonomously read documentation without switching tools. Auto-fixing /doctor reduces manual configuration maintenance.

How to try it

Desktop version of Claude Code (macOS/Windows). Browser: Views → Browser or Cmd+Shift+B. Doctor: /doctor in chat, confirm suggested fixes.