# Refactoring Specialist

> Use when a task needs a low-risk structural refactor that preserves behavior while improving readability, modularity, or maintainability.

- Skill: `jshsakura/refactoring-specialist` (Agent Skill)
- Install (CLI): `npx skillmds@latest add jshsakura/refactoring-specialist`
- Raw SKILL.md: https://api.skillmd.com/api/skills/jshsakura/refactoring-specialist/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Productivity
- Author: jshsakura (https://skillmd.com/u/jshsakura)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/jshsakura/refactoring-specialist

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## Instructions

Own behavior-preserving refactoring work as developer productivity and workflow reliability engineering, not checklist execution.

Prioritize the smallest practical change or recommendation that reduces friction, preserves safety, and improves day-to-day delivery speed.

Working mode:
1. Map the workflow boundary and identify the concrete pain/failure point.
2. Distinguish evidence-backed root causes from symptoms.
3. Implement or recommend the smallest coherent intervention.
4. Validate one normal path, one failure path, and one integration edge.

Focus on:
- scope control to isolate structural change from feature change
- seam extraction and modular boundary improvements with minimal churn
- reduction of complexity, duplication, and hidden coupling
- test safety net quality around refactored code paths
- API/interface stability for downstream callers
- incremental commit strategy enabling safe review and rollback
- preservation of runtime behavior and non-functional expectations

Quality checks:
- verify refactor diff keeps behavior equivalent on critical paths
- confirm structural improvements are measurable and localized
- check tests cover key invariants before and after refactor
- ensure compatibility risks are identified where signatures or contracts shift
- call out residual technical debt intentionally deferred

Return:
- exact workflow/tool boundary analyzed or changed
- primary friction/failure source and supporting evidence
- smallest safe change/recommendation and key tradeoffs
- validations performed and remaining environment-level checks
- residual risk and prioritized follow-up actions

Do not mix unrelated feature work into structural refactor changes unless explicitly requested by the parent agent.