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Refactor or simplify working code

Compare behavior-preserving cleanup workflows by scope, safety checks, language assumptions, and willingness to change architecture.

Last meaningful review July 20, 2026

The job

You have code that already works and want to simplify, restructure, or improve maintainability without changing its externally observable behavior.

Includedcode simplification · behavior-preserving structural cleanup · maintainability improvements with verification

Not this pagebug diagnosis · feature implementation · large architecture migration

30-second route

01

You need to make working code easier to understand or maintain while preserving behavior, without restricting work to a recent diff.

It is the closest explicit match to the task and supplies behavior-preservation, scope, and verification guidance without a declared host-tool dependency.

Editorial confidence: high
Consider Code Simplification
02

The intended cleanup surface is a working-tree diff, staged changes, last commit, branch/PR, or a named changed-file set.

Its workflow is purpose-built to review recent diffs with repository evidence, risk tiers, and targeted verification.

Editorial confidence: high
Consider Simplify Code
03

You need an explicitly scoped file/module/project refactor and the required OMO orchestration and analysis tools are available.

It provides the most structured codemap-to-plan-to-verified-execution process among the selected options.

Editorial confidence: medium
Consider Refactor
04

You need the Refactor workflow but do not have its OMO, LSP, AST-grep, and todo tooling.

The supplied workflow explicitly depends on host-specific tools.

Editorial confidence: high
Adapt its staged safety and verification process manually, or use Code Simplification.

Before you install

Install or use Code Simplification first; adapt the other two to the host environment when their documented orchestration is unavailable.

Only the selected Refactor and Simplify Code workflows make operational assumptions about host capabilities; no supplied source provides a universal installation procedure for these selected Skills.

Read the intervention guide →

Source-led comparison

What changes the choice

Facts are extracted from each selected Skill’s declared workflow. Signals describe public adoption; they are not a universal score.

SkillBest forActionEdits?Setup
Code SimplificationGeneral behavior-preserving simplification of working code for clarity and maintainability.Use as the default cleanup workflow: understand intent, make one simplification at a time, and verify after each change.Targets nesting, long functions, unclear names, duplication, dead code, redundant abstractions, and unnecessary assertions.No setup or invocation is declared in the supplied source. ↗Simplify CodeA bounded cleanup pass on uncommitted, staged, committed, branch, or explicitly named recent changes.Capture the relevant diff, run reuse, quality, and efficiency review in parallel, then apply only safe or verified careful fixes.Finds duplicate implementations, redundant state, weak abstractions, unnecessary work, and silent failures; excludes risky contract-changing edits from automatic application.Requires an environment that supports its documented `delegate_task` batch workflow for three concurrent reviewers. ↗RefactorA larger, explicitly scoped file/module/project refactor when you want codemapping, test assessment, a detailed plan, and continuous verification.Invoke `/refactor` with a target, scope, and safe strategy; clarify ambiguous goals before mapping dependencies and making verified steps.Covers renames, structural changes, pattern transformations, and modernization while assessing impact and test coverage.Its workflow explicitly assumes `call_omo_agent`, LSP tools, AST-grep, TodoWrite, and the repository’s test/type-check tooling. ↗

Source notes

Inspect evidence and candidate limits 3 candidates

Why these candidatesEach candidate comes from tracked public sources and has a source-attributed adoption signal. This is a shortlist, not a catalogue or global ranking.

What this cannot establishWe read declared instructions and public signals. We do not run skills, benchmark outputs, audit security, or claim a universal best choice.

01

Code Simplification

Source ↗

Use it forGeneral behavior-preserving simplification of working code for clarity and maintainability.

Avoid ifThe code is already clear, not yet understood, performance-critical where simplicity may slow it down, or being replaced wholesale.

ActionUse as the default cleanup workflow: understand intent, make one simplification at a time, and verify after each change.

EditsTargets nesting, long functions, unclear names, duplication, dead code, redundant abstractions, and unnecessary assertions.

SetupNo setup or invocation is declared in the supplied source.

Inspect workflow and compatibility details

ContextLanguage-agnostic workflow with TypeScript, Python, and React/JSX examples.

OutputIncremental, reviewable simplifications with a final verification checklist.

ControlConservative: preserve outputs, side effects, error behavior, ordering, project conventions, and scope.

InvocationNot yet mapped from the source.

Install scopeNot yet mapped from the source.

Agent fitHigh: its stated purpose exactly matches working code that needs clarity without behavior changes.

Watch outDo not equate fewer lines with clearer code; retain meaningful abstractions and error handling.

Source-visible capabilitiesBehavior preservationRequires unchanged inputs, outputs, side effects, error behavior, and edge cases.explicit sourceIncremental verificationMakes one simplification at a time and runs tests after each change.explicit source
CompatibilityRuntime/platformunknownnot runtime-tested
Evidence

Explicitly applies when code works but is harder to read, maintain, or extend, without changing behavior.SKILL.md:lines 1-3 · inspected 2026-07-20 · high confidence

Defines simplification as reducing complexity while preserving exact behavior.SKILL.md:lines 10-12 · inspected 2026-07-20 · high confidence

Provides a final verification checklist covering tests, build, lint, conventions, and error handling.SKILL.md:lines 319-331 · inspected 2026-07-20 · high confidence

Public signal1631 /SkillsMP source-specificbest-general-fitbehavior-preservingincremental-verificationexplicit source
02

Simplify Code

Source ↗

Use it forA bounded cleanup pass on uncommitted, staged, committed, branch, or explicitly named recent changes.

Avoid ifThere is no identifiable changed code, the diff is very large and cannot be scoped, or three parallel reviewers are unavailable or too costly.

ActionCapture the relevant diff, run reuse, quality, and efficiency review in parallel, then apply only safe or verified careful fixes.

EditsFinds duplicate implementations, redundant state, weak abstractions, unnecessary work, and silent failures; excludes risky contract-changing edits from automatic application.

SetupRequires an environment that supports its documented `delegate_task` batch workflow for three concurrent reviewers.

Inspect workflow and compatibility details

ContextDiff-first and repository-aware; each reviewer receives the full diff and searches the surrounding codebase.

OutputStructured findings with confidence and SAFE/CAREFUL/RISKY tiers, followed by targeted verification and a summary.

ControlRisk-tiered: auto-apply only proven-safe cleanup; verify careful edits; flag risky changes for human review.

InvocationNot yet mapped from the source.

Install scopeNot yet mapped from the source.

Agent fitHigh for recent-change cleanup, with unusually explicit evidence and risk handling.

Watch outIt intentionally limits cleanup to the diff and minimal surrounding edits; it is not a module-wide rewrite workflow.

Source-visible capabilitiesParallel cleanup reviewRuns focused reuse, quality, and efficiency reviewers concurrently.explicit sourceRegression-safe applicationSeparates SAFE, CAREFUL, and RISKY fixes and requires targeted tests plus repository lint/type checks.explicit source
Compatibilitylinuxdeclarednot runtime-testedmacosdeclarednot runtime-testedwindowsdeclarednot runtime-tested
Public signal498 /SkillsMP source-specificrecent-diff-specialistparallel-reviewrisk-tieredexplicit source
03

Refactor

Source ↗

Use it forA larger, explicitly scoped file/module/project refactor when you want codemapping, test assessment, a detailed plan, and continuous verification.

Avoid ifThe host cannot supply its documented OMO agents, LSP, AST-grep, todo, and test tooling; use a less tool-bound workflow instead.

ActionInvoke `/refactor` with a target, scope, and safe strategy; clarify ambiguous goals before mapping dependencies and making verified steps.

EditsCovers renames, structural changes, pattern transformations, and modernization while assessing impact and test coverage.

SetupIts workflow explicitly assumes `call_omo_agent`, LSP tools, AST-grep, TodoWrite, and the repository’s test/type-check tooling.

Inspect workflow and compatibility details

ContextGeneral codebase-aware refactoring workflow, with safe as the default strategy and broader aggressive changes optional.

OutputIntent confirmation, codemap, verification plan, atomic refactoring steps, and final regression checks.

ControlProcess-heavy and safety-oriented: pauses for unclear goals or low coverage, verifies after every step, and stops on failures.

Invocation/refactor <refactoring-target> [--scope=<file|module|project>] [--strategy=<safe|aggressive>]

Install scopeNot yet mapped from the source.

Agent fitHigh for a deliberate multi-file refactor, but less portable than the first two recommendations.

Watch outThe source’s command examples and orchestration are specific to its host environment, so adaptation may be required.

Source-visible capabilitiesScope and strategy controlAccepts file, module, or project scope and safe or aggressive strategy.explicit sourceContinuous regression checksRequires diagnostics, tests, and type checks after every refactoring step, stopping on failure.explicit source
CompatibilityRuntime/platformunknownnot runtime-tested
Evidence

Explicitly triggers on refactor, cleanup, restructure, extract, simplify, and modernize requests.SKILL.md:lines 1-3 · inspected 2026-07-20 · high confidence

States codebase mapping, risk assessment, planning, precise execution, and tests after each change.SKILL.md:lines 30-39 · inspected 2026-07-20 · high confidence

Requires clarification when the target, outcome, scope, or success criteria are unclear.SKILL.md:lines 43-80 · inspected 2026-07-20 · high confidence

Public signal955 /SkillsMP source-specificfull-refactor-workflowcodemap-and-teststool-boundexplicit source

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