/simplify
A Claude Code slash command, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
What it is
[Skill](/docs/en/skills#bundled-skills). Review the changed code for cleanup opportunities and apply the fixes. Four review [agents](/docs/en/sub-agents) run in parallel, covering reuse of existing helpers, simplification, efficiency, and whether the change is at the right level of abstraction. From v2.1.154, the review doesn't look for correctness bugs. Use /code-review to find bugs. On earlier versions, /simplify is equivalent to /code-review --fix. Pass a path or PR reference to review a specific target
Anthropic's own wording. Read off Commands, captured 2026-08-28.
Presence across releases
The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.
Changelog entries naming it
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v2.1.223Code-review and /simplify prompt modules restructured
The code-review and /simplify prompts moved into new modules with no change to their wording.
named in this entry
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v2.1.222Code-review, /simplify and batch orchestration prompts moved between modules
Three prompt texts moved between files with their wording intact, so nothing changes for you.
named in this entry
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v2.1.220Prompt text for /code-review, /simplify, skill-saving and credential paths is byte-identical
Code review, simplify and skill-saving instructions are unchanged despite looking rewritten in the bundle.
named in this entry
Documentation pages
- Commands reference table Claude Code CLI
- Claude Code changelog mentions it Claude Code CLI
- Code Review mentions it Claude Code CLI
- Week 21 · May 18–22, 2026 mentions it Claude Code CLI
A reference table page is one whose own table defines this name, and it is where the description above came from. A page that mentions it carries the name somewhere in its text and may say nothing about it at all. Every page carrying it.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the slash command does. All slash commands.