Claude Code /simplify Skill: Three Parallel Review Agents Auto-Fix Overengineered Code After Refactors

MindStudio·high signal

Claude Code's built-in /simplify skill spawns three specialized review agents in parallel—Code Reuse (duplicated logic, missed abstractions), Code Quality (readability, architectural issues beyond linting), and Efficiency (performance problems, resource waste)—then aggregates findings and applies fixes automatically. Most valuable right after accepting a batch of AI-generated code or large refactors. Announced by Boris Cherny (Claude Code creator) as a built-in skill shipping with Claude Code.