Simplify

by kairyou

Simplify is a Quality skill for Claude Code, published by kairyou in agent-tools.

178 stars0 forkson kairyou/agent-toolsAdded 2026/09/07+2% in starsRepository updated 2026/08/31

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agent-hooksagent-skillsclaude-codecodexcoding-agentsdeveloper-toolsopencodestatuslineusage-monitoring

Install in seconds

Install Simplify

Copy Simplify into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/kairyou/agent-tools/tree/main/skills/workflow/at-simplify ~/.claude/skills/at-simplify

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/kairyou/agent-tools.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/workflow/at-simplify/SKILL.md in kairyou/agent-tools
Installs to: ~/.claude/skills/at-simplify
Collection: One of 8 skills cataloged from this repository
Category: Quality — 1817 skills

What Simplify does

Simplify reviews changed code for duplication, complexity, efficiency, and architecture fit, then applies cleanup fixes. Use it on diffs, commit ranges, PRs, paths, staged changes, or working-tree changes.

Simplify is cataloged under Quality on DirSkills. Simplify comes from a repository tagged agent-hooks, agent-skills, claude-code, codex and coding-agents.

Documentation

README

Excerpt

Simplify

at-simplify → 4 cleanup agents in parallel → apply the fixes

You are improving the quality of the changed code, not hunting for bugs. Review it for reuse, simplification, efficiency, and altitude issues, then fix what you find. Do not look for correctness bugs — that is what at-review is for.

Phase 0 — Gather the diff

Run git diff "@{upstream}...HEAD" (or git diff main...HEAD / git diff HEAD~1 if there's no upstream) to get the unified diff under review. If there are uncommitted changes, or the range diff is empty, also run git diff HEAD and include the working-tree changes in scope — the review often runs before the commit. If a PR number, branch name, or file path was passed as an argument, review that target instead. Treat this diff as the review scope.

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Simplify

What else does kairyou publish alongside Simplify?
Simplify is one of 8 skills that DirSkills catalogs from kairyou/agent-tools, the repository it ships in. Its siblings there include At Commit, At Usage and At Vision. Each one is a separate skill with its own page in this directory, installs the same way Simplify does, and is maintained by kairyou in that same repository. The rest of the collection is listed on the kairyou/agent-tools page.
How does Simplify compare to other Quality skills?
Simplify ranks #1686 by stars among the 1817 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Simplify against them. Open each page to compare what they document and how they install.