Claude Code Week 28: built-in browser, /doctor checkup, and safer worktree flows

Anthropic’s Claude Code “What’s new” for Week 28 (July 6–10, 2026) highlights a built-in desktop browser and several workflow improvements that matter for agentic coding sessions.

Built-in browser in Claude Code desktop

Claude Code on desktop now includes a built-in browser that can open and interact with external sites. Anthropic notes the browser is sandboxed/configurable, users can choose whether sessions persist, and actions are reviewed by safety classifiers.

/doctor becomes a setup checkup (and can fix issues)

Anthropic says /doctor is now a full setup checkup (with /checkup as an alias). The new flow can diagnose issues and propose fixes, including identifying unused skills/plugins/MCP servers, deduplicating local CLAUDE.md files, flagging slow hooks, and asking for confirmation before applying changes.

Other workflow improvements

Week 28 also includes several smaller but practical changes:

• /cd now suggests directory paths as you type
• /commit-push-pr auto-allows git push to the configured push remote (not just origin)
• /login supports Anthropic-operated public gateway endpoints
• Entering a git worktree outside .claude/worktrees/ now prompts for confirmation

Source

• Claude Code Docs — “Week 28 · July 6–10, 2026”: https://code.claude.com/docs/en/whats-new/2026-w28