simplify
Skill14 starsChanged 5 days agoMITView on GitHub
Use when the code a piece of work changed is to be cut back to fewer lines, behaviour unchanged: a commit range (`<base>..<head>`) whose changes left old paths, unused code or a second implementation behind, a path the work just replaced, one family handed over by a simplify-rework audit, or a run's simplify phase. Produces each superseded path deleted and each duplicate consolidated, one narrow pass each, tests green, net lines negative, and a short summary. Not for auditing a whole codebase (simplify-rework), branching complexity (complexity-rework) or an interface's shape (deepen-module).
119 other projects use a version of this.
Adopted by
Most recently taken up by
- thistleknot/skillstheir own version, first seen Nov 8, 2026
- PeanutGT/NutsSkillstheir own version, first seen Nov 8, 2026
- Ovich/charretteword for word, first seen Nov 8, 2026
- caidanw/skillstheir own version, first seen Nov 8, 2026
- alexandrosandre/agentic-engineeringtheir own version, first seen Nov 8, 2026
- alexandrosandre/alice-issue-agenttheir own version, first seen Nov 8, 2026
Used with
Projects with it also use codex-system, design-tracker and 10 more.
Other files people use alongside this one.
Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
gaebalaiSkillcodex-system
PROACTIVELY consult Codex CLI, your highly capable supporter with exceptional reasoning and task completion abilities. Codex is a trusted expert you should ALWAYS consult BEFORE making decisions on: design choices, implementation approaches, debugging strategies, refactoring plans, or any non-trivial problem. When uncertain, consult Codex. Don't hesitate - Codex provides better analysis. Explicit triggers: "think deeper", "analyze", "second opinion", "consult codex".
Also in 3 projects that use this
gaebalaiSkilldesign-tracker
PROACTIVELY track and document project design decisions without being asked. Activate automatically when detecting architecture discussions, implementation decisions, pattern choices, library selections, or any technical decisions. Also use when user explicitly says "記録して", "設計どうなってる", "record this". Do NOT wait for user to ask - record important decisions immediately.
Also in 3 projects that use this
mike22890Skillclonedeps
将项目依赖的第三方库源码克隆到本地,便于深入阅读和调试。当需要查看库的实现细节、阅读源码、调试第三方依赖、理解 SDK/framework 内部机制、查看 node_modules 之外的原始代码、分析开源库架构、学习他人代码、查看依赖的 TypeScript 类型定义时使用。
Also in 3 projects that use this
mdrubelamin2Skillverification-planning
Plans how to prove a change works or broke nothing: frames the claim, designs an evidence path from the system itself, and requires every check to be able to fail.
Also in 3 projects that use this
devbrother2024Skillartifact-design
단독 self-contained HTML 산출물(랜딩 페이지, 정적 문서·리포트, 독립 대시보드, 데모·게임, 개발 전 UX/UI 대안 비교 목업)을 만들 때 팔레트·타이포그래피·레이아웃을 의도적으로 설계하고 템플릿·AI스러운 디자인을 피하도록 돕는 디자인 가이드. HTML/CSS를 쓰기 전에 로드한다. "랜딩 만들어줘", "이 내용 단일 HTML로 예쁘게", "UX 대안 HTML로 비교해줘", "디자인 잡아줘"처럼 단독 HTML 아티팩트를 만들거나 비교하는 요청에 활성화하고, 기존 앱(React·Vue 등)의 인앱 컴포넌트 수정이나 순수 백엔드·로직 작업에는 쓰지 않는다.
Also in 3 projects that use this
codebycoreySkillbatch
Create multiple proposals from free-form feature descriptions. Use when planning several features at once, batch creating proposals, or setting up related changes.
Also in 4 projects that use this
- +3 more from gaebalai
Other versions119 projects use a version of this.
Word for word · 1
- Ovich/charrette★ 14100% same
Edited · 0
None found.
Wrote their own version · 118
- Z3Prover/z3★ 13ksame name
- aaddrick/claude-desktop-debian★ 5.5ksame name
- CherryHQ/cherry-studio-app★ 4.1ksame name
- elliothux/open-compute★ 3.3ksame name
- meta-pytorch/OpenEnv★ 2.8ksame name
- huggingface/OpenEnv★ 2.8ksame name
- bholmesdev/hubble.md★ 1.5ksame name
- kdlbs/kandev★ 1.1ksame name
- truffle-ai/dexto★ 659same name
- deadlock-mod-manager/deadlock-mod-manager★ 584same name
108 more not listed
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
In this repository34 other files it gives its agents.
- AGENTS.mdAGENTS.md
- brainstormSkill
- brainswarmSkill
- interviewSkill
- whiteboard-defenseSkill
- complexity-reworkSkill
- deepen-moduleSkill
- dependency-graphSkill
- simplify-reworkSkill
- write-diagramsSkill
- aiviewSkill
- swarm-boardSkill
- execute-planSkill
- long-horizonSkill
- orchestrate-planSkill
- guide-complexitySkill
- guide-createSkill
- guide-deepen-moduleSkill
- helpSkill
- next-stepSkill
- orchestrateSkill
- cold-readSkill
- write-planSkill
- roadmapSkill
- technical-writingSkill
- write-conventionsSkill
- pr-reviewSkill
- recurring-review-findingsSkill
- swarmSkill
- design-prototypeSkill
- point-atSkill
- validate-deliverySkill
- verification-skill-createSkill
- create-workbenchSkill
The file
Files
Simplify
The range is the context. A commit range's diff and messages say what each change replaced, so the pass reads them instead of exploring, and needs nobody's memory. Delete, never rewrite.
Steps
- The baseline: the full test suite, and the verify that judged the work where there is one, run on
<head>before any cut, their results kept. Parity means the same steps give the same results after; without the before, a failure after cannot be laid on the cuts. - Read the range:
git log <base>..<head>and its diff. List each candidate: an old path a change superseded, code the range left without a caller (a name search outside its file finds none), two implementations of one concern. Check each one's reach as thesimplify-reworkskill'sreferences/audit.mdsays under Reach; a reached candidate is dropped. - One pass per candidate: a superseded or dead path as
references/path.mdsays, a duplicate asreferences/consolidate.mdsays. Candidates touching no common file run in parallel, each in its own worktree. - Net lines per pass with this skill's
scripts/net-lines.mjs. A pass that did not go negative is reverted, not argued. - Parity: the full suite, not the narrow tests (a removal breaks code far from the files it touched, and only the full suite sees that), then the verify of step 0 again. A verify is highly recommended even where the work had none: removal breaks callers no test reaches (a load by string, an entry point by convention, wording a reader sees), and the verify re-runs what held before. It needs no verify skill: the steps are written on the spot, what to check and how, from the last verify's steps or the range's done-whens. A pass that broke parity is reverted, never patched: it has already cost more than it saved, and a patch turns a removal into a rewrite.
- The summary, short and scannable: one row per pass (what went, why, its commit, lines added and deleted), the total, parity (suite and verify, before and after, or "parity not verified"), and what was left and why.
Rules
- A pass is one candidate. Two in one diff make a change no reviewer can attribute.
- Removals run on a cheaper model, consolidations on a strong one. The survivor choice is judgment.
- Add no dependency without the person's yes.
- Stay inside the range's files and what they reach. A finding beyond it is named in the summary, for the
simplify-reworkskill.
Red flags
| Thought | Reality |
| "I'll grep around and see what looks unused" | Exploration. The range names its candidates; read it. |
| "While removing this I'll simplify the survivor" | A second change in the same diff. Its own pass. |
| "Both implementations are fine, keep both" | Two copies of one concern drift. Choose, or record why each is a different concern. |
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