Claude Code /batch Skill: Decompose Large Migrations into 5-30 Isolated Worktree Agents Running in Parallel

ClaudeFast·high signal

The /batch built-in skill orchestrates large-scale codebase changes by decomposing work into 5-30 independent units and spawning isolated worktree agents to handle each in parallel. Each agent works in its own git worktree so changes don't collide. Designed for straightforward, parallelizable code migrations—renaming patterns, API upgrades, dependency swaps—where the change is uniform but the codebase is large. Announced alongside /simplify by Boris Cherny.