code simplifier — Agent Skill
by anthropics · Updated
Agent that simplifies and refines code for clarity, consistency, and maintainability while preserving functionality. Focuses on recently modified code.
At a glance
code-simplifier is an Agent Skill by anthropics in the Automation & Workflow category. In Claude Code it installs with `/plugin install code-simplifier@claude-plugins-official` after adding the anthropics/claude-plugins-official marketplace; other assistants use its SKILL.md instructions as rules. Its source repository has 45,039 GitHub stars (as of Oct 27, 2026).
How to install code simplifier in your AI client
Setup for Claude Code, Claude Desktop, Cursor, Codex, Windsurf, Cline and VS Code — copy-paste ready.
How to install code simplifier in Claude CodeAnthropic's agentic CLI
Add the marketplace
claude/plugin marketplace add anthropics/claude-plugins-officialInstall the skill
claude/plugin install code-simplifier@claude-plugins-officialUse it
These are slash commands for a Claude Code session, not your shell. Claude auto-invokes the skill when your request matches its description — or type its slash command if it exposes one.
How to install code simplifier in Claude DesktopDesktop app (MCP config)
Clone the source
bashgit clone https://github.com/anthropics/claude-plugins-official.gitFind the skill
It lives in claude-plugins-official/plugins/code-simplifier — that folder contains the SKILL.md.
Add the SKILL.md to your Skills folder
Settings → Capabilities → Skills → add the folder containing SKILL.md. Claude picks it up automatically.
How to install code simplifier in CursorAI-first code editor
Clone the source
bashgit clone https://github.com/anthropics/claude-plugins-official.gitFind the skill
It lives in claude-plugins-official/plugins/code-simplifier — that folder contains the SKILL.md.
Convert to a Cursor rule
Create .cursor/rules/code-simplifier.mdc and paste the SKILL.md body. Set `alwaysApply` or a glob so the Agent loads it in context.
How to install code simplifier in Codex CLIOpenAI coding agent
Clone the source
bashgit clone https://github.com/anthropics/claude-plugins-official.gitFind the skill
It lives in claude-plugins-official/plugins/code-simplifier — that folder contains the SKILL.md.
Reference in AGENTS.md
Add the skill's instructions (or a link) to AGENTS.md at your repo root — Codex reads it on every run.
How to install code simplifier in WindsurfCodeium's agentic IDE
Clone the source
bashgit clone https://github.com/anthropics/claude-plugins-official.gitFind the skill
It lives in claude-plugins-official/plugins/code-simplifier — that folder contains the SKILL.md.
Add to your rules / context
Paste the SKILL.md instructions into this tool's custom rules or workspace instructions so the agent follows them.
How to install code simplifier in ClineVS Code autonomous agent
Clone the source
bashgit clone https://github.com/anthropics/claude-plugins-official.gitFind the skill
It lives in claude-plugins-official/plugins/code-simplifier — that folder contains the SKILL.md.
Add to your rules / context
Paste the SKILL.md instructions into this tool's custom rules or workspace instructions so the agent follows them.
How to install code simplifier in VS CodeCopilot / MCP support
Clone the source
bashgit clone https://github.com/anthropics/claude-plugins-official.gitFind the skill
It lives in claude-plugins-official/plugins/code-simplifier — that folder contains the SKILL.md.
Add to your rules / context
Paste the SKILL.md instructions into this tool's custom rules or workspace instructions so the agent follows them.
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