Boris Cherny, creator and head of Claude Code at Anthropic, has previewed two new built-in skills heading to the next version of the tool: /simplify and /batch. Cherny says he uses both daily and called them ready to share publicly.
/simplify builds on the code-simplifier plugin that Anthropic open-sourced in January. The upgraded version spawns parallel agents to tighten code quality, tune performance, and check compliance with a project's CLAUDE.md file. Cherny's pitch: finish a code change, run /simplify, and the PR is production-ready without the usual manual cleanup. How much of the grunt work it actually eliminates remains to be seen in practice.
The /batch skill targets a different pain point: large-scale code migrations. It walks you through an interactive planning phase, then fans out work to dozens of agents running in isolated git worktrees. Each agent handles its slice of the migration, runs tests independently, and opens a PR only after passing. The example Cherny gave: "/batch migrate src/ from Solid to React." Worktree isolation for agents shipped in Claude Code v2.1.32 earlier this month, so the infrastructure is already in place.
No release date was announced. Cherny framed both skills as automating the two most common bottlenecks he encounters: getting a PR across the finish line and executing repetitive, parallelizable refactors across a codebase.
Bottom Line
The /simplify and /batch skills aim to automate PR cleanup and large-scale code migrations using parallel agents with git worktree isolation, though no release date has been given.
Quick Facts
- Two new skills previewed: /simplify and /batch
- Boris Cherny: creator and head of Claude Code at Anthropic
- Code-simplifier plugin was open-sourced January 8, 2026
- Worktree isolation for agents shipped in Claude Code v2.1.32
- /batch uses dozens of parallel agents, each in its own git worktree
