simplify-code

Simplify over-engineered or duplicated code while preserving behavior through unchanged tests.

3|1|Updated May 10, 2026
One-click install
npx skills add https://github.com/nuttaruj/rolepod --skill simplify-code-nuttaruj
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: simplify-code
Source: https://github.com/nuttaruj/rolepod/tree/main/core/skills/simplify-code
Command: npx skills add https://github.com/nuttaruj/rolepod --skill simplify-code-nuttaruj

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps reduce over-engineered, duplicated, or bloated code without changing product behavior. It is designed for safe refactoring work where the goal is to simplify structure, remove unnecessary abstractions, and improve maintainability while proving that existing behavior still holds through unchanged tests.

Core Features & Use Cases

  • Behavior-preserving simplification: Inline single-use helpers, remove pass-through wrappers, delete dead flags, and tighten structural guarantees instead of piling on defensive runtime checks.
  • Duplication reduction: Detect repeated logic across files and centralize it once it appears in 3 or more places, with stricter treatment for sensitive areas like auth, billing, credits, URL validation, redirects, SSRF, cookies, logging, retries, and external APIs.
  • Safe refactor workflow: Enforces a green-test baseline, uses deletion-test and Chesterton's Fence reasoning before removing abstractions, and stops when a change would alter assertions or behavior.
  • Use cases: Apply it when a reviewer flags over-engineering, when a large file has grown messy over time, when a wrapper has only one caller, or when a cleanup is needed before implementing a harder feature change.

Quick Start

Ask the AI to simplify a specific tested file or module by removing single-use abstractions and duplication while keeping the same tests green before and after.

Frequently Asked Questions about simplify-code

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

FAQPage Schema
How do I safely refactor over-engineered code without changing behavior?

Safely refactor over-engineered code by inlining single-use helpers and removing pass-through wrappers while proving existing behavior holds through unchanged passing tests. A green baseline test suite is required before simplifying structure and tightening guarantees.

What is the best way to reduce code duplication across multiple files?

Reduce code duplication by detecting repeated logic across files and centralizing it once it appears in three or more places. Stricter consolidation rules apply to sensitive areas like auth, billing, redirects, cookies, logging, and external APIs.

When should I remove single-use abstractions and dead configuration?

Remove single-use abstractions and dead configuration when a reviewer flags over-engineering, a wrapper has only one caller, or a cleanup is needed before implementing a harder feature change. Always apply deletion-test and Chesterton's Fence reasoning first.

Do I need a passing test suite to simplify my codebase?

Yes, a green baseline test suite is required to simplify your codebase. Tests must remain unchanged and pass before and after removing unnecessary abstractions, centralizing repeated patterns, and deleting dead flags.

What happens if a refactoring change alters assertions or discovers missing tests?

If a refactoring change alters assertions, discovers bugs, or finds missing tests, the simplification process enforces a strict handoff. It stops immediately when a change would alter existing behavior or break the green-test baseline.

How does Chesterton's Fence apply to deleting dead code and wrappers?

Chesterton's Fence reasoning requires understanding why an abstraction or dead flag exists before removing it. You must verify all call sites and run deletion-test checks to ensure structural simplification does not break existing product behavior.