Code Review - Claude Code Blog

Plan Mode is the difference between agents that ship the right thing and agents that confidently ship the wrong thing. Here's how it works, when to use it, and the habits that turn it into your biggest reliability lever.

PMs, marketers, designers, and ops people are now opening Claude Code on real production repos. Here's how to actually ship useful changes — and the specific things that make engineers want to revoke your access.

Ultrareview (/ultrareview) runs a multi-agent cloud review of your current branch or a GitHub PR — parallel specialists reviewing security, architecture, correctness, and style. Here's what it is, how to run it, and when to reach for it.