refactor

Refactor multi-file code with characterization tests and incremental verification.

23|Updated Apr 5, 2026
One-click install
npx skills add https://github.com/reedmayhew18/ClawedBack --skill refactor-reedmayhew18
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: refactor
Source: https://github.com/reedmayhew18/ClawedBack/tree/main/.claude/skills/refactor
Command: npx skills add https://github.com/reedmayhew18/ClawedBack --skill refactor-reedmayhew18

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Safely refactor code with characterization tests and incremental changes. Use when modernizing legacy code or reworking architecture.

Core Features & Use Cases

  • Stepwise refactoring plan: characterize current behavior, plan changes, execute incrementally, and verify via tests.

  • Test-backed safety: create characterization tests to document current behavior before changes.

  • Guardrails and checkpoints: checkpoints ensure reviews and rollback if needed.

  • Use Case: Modernize a legacy module with confidence, add tests first, and release changes with minimal risk.

Quick Start

Describe the target module and the desired refactor goal, and I will generate a safe, incremental plan.

Frequently Asked Questions about refactor

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I safely refactor legacy code without changing observable behavior?

To safely refactor legacy code, you must first establish characterization tests to document current behavior, then execute incremental changes with verification checkpoints to ensure no observable behavior is altered.

What are characterization tests and when do I need them for a refactor?

Characterization tests document the actual current behavior of code before modifications. You need them when modernizing legacy code or reworking architecture to create a safety net before making incremental changes.

How do I plan incremental changes for a multi-file refactoring project?

Plan incremental changes by describing your target module and refactor goal to generate a stepwise plan. This plan characterizes current behavior, schedules modifications, and defines verification checkpoints for multi-file projects.

Do I need a working test runner to modernize a legacy module?

Yes, a working test runner is required to modernize a legacy module. The refactoring process depends on executing characterization tests and verification checkpoints to validate incremental changes and enable rollback if needed.

What is the best way to add tests first before reworking an architecture?

The best way to add tests first is to create characterization tests that capture existing outputs. This test-backed approach provides guardrails and checkpoints for safe modernization with minimal risk during architecture rework.

When should I not use an incremental refactoring approach?

You should not use incremental refactoring without a working test runner or if you cannot establish characterization tests. Without these guardrails and checkpoints to verify behavior, incremental changes pose significant risk.