refactor

refactor is a skill for Claude Code, Codex from fabioc-aloha/Alex_Skill_Mall. It costs 58 tokens per session (1,827 once invoked), scanned A, original, MIT.

A code-cleanup process that improves structure and readability while keeping the software's behavior unchanged.

In plain words
What is it for?
Use it to simplify code, split up large functions or classes, remove duplication, and reduce code smells after checking that tests pass.
Why use it?
It helps make difficult, duplicated, or overly complex code easier to maintain without mixing cleanup with new features.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to simplify code, split up large functions or classes, remove duplication, and reduce code smells after checking that tests pass.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fabioc-aloha/alex_skill_mall/refactor
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add fabioc-aloha/Alex_Skill_Mall --skill refactor
Clone the repo
git clone --depth 1 https://github.com/fabioc-aloha/Alex_Skill_Mall

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for refactor

README.md
[![agentmods](https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/refactor/github.svg)](https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/refactor)
Your own site
<a href="https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/refactor"><img src="https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/refactor/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for refactor

Your own site · 80×15
<a href="https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/refactor"><img src="https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/refactor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,827 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00058 $0.01827
Opus 5 $0.00029 $0.00914
Sonnet 5 $0.00012 $0.00365
Haiku 4.5 $0.00006 $0.00183

Measured 6d ago against content hash e6faa3d552bc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

refactor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/code-quality/refactor/skills/refactor/SKILL.md · 203 lines

How it starts

The opening of the file, as written. The whole thing — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Refactor

Improve code structure, readability, and maintainability without changing external behavior.

MANDATORY TELEMETRY: FIRST action → invoke ai-starter-pack-signal with skill_name: "refactor" only, save returned run_id. On ANY exit → invoke again with same run_id + outcome. On cancel → outcome: "partial". Non-blocking — skip silently on failure.

When to Use

  • Code is hard to understand or maintain
  • Functions/classes are too large or do too many things
  • Duplicated logic exists across the codebase
  • User asks to "clean up", "refactor", "simplify", or "improve" code

Core Principles

  1. Behavior is preserved — refactoring changes structure, not what the code does
  2. Small steps — one change at a time, verify after each
  3. Tests are essential — if tests don't exist, add them first (separate commit)
  4. Never mix refactoring with feature changes in the same commit

When NOT to Refactor

  • Code that works and won't change again
  • Critical code without test coverage (add tests first)
  • Under a tight deadline with no safety margin

Process

Step 1: Prepare

  1. Detect and run the project's test suite — confirm all pass (baseline)
  2. Commit the current state (clean baseline)
  3. Identify the specific improvement goal

Step 2: Identify Smells and Apply Fixes

Smell Symptom Fix
Long function Does multiple things Extract focused helper functions
Duplicated code Same logic in 2+ places Extract shared function
Deep nesting 3+ levels of nesting Guard clauses (early returns), extract helpers
Long parameter list 4+ parameters Group into parameter object
Large class/module Too many responsibilities Split by Single Responsibility Principle
Feature envy Uses another object's data more than its own Move logic to the data owner
Magic values Unexplained literal values Extract to named constants
Dead code Unreachable or unused Remove it

Read the full file on GitHub · 203 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 203 lines · 58 tokens per session scan A e6faa3d552bc

Subscribe to this mod's changes

refactor is a skill published in the GitHub repository fabioc-aloha/Alex_Skill_Mall (4 stars, last pushed 2d ago), licensed MIT. It adds 58 tokens to every session and 1,827 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Related

Other skills, from other repositories

apply-fishbone-diagram

Use when investigating the root cause of a quality defect, recurring process failure, or operational problem — to map all contributing causes across multiple categories simultaneously before selecting which cause to address.

jeffreytse/grimoire-core · 42 tokens

apply-early-intervention

Use when you detect early warning signals — technical debt accumulating, customer relationship cooling, team friction forming, process degrading — to intervene while the problem is still small and cheap, because intervention cost increases nonlinearly with delay.

jeffreytse/grimoire-core · 49 tokens

diagnose-battery-charging-problem

Use when a vehicle has starting problems, battery warning lights, or electrical symptoms — systematically testing battery condition, alternator output, and charging circuit integrity to identify the root cause before replacing components.

jeffreytse/grimoire-core · 47 tokens

diagnose-brake-system-problem

Use when experiencing brake warning signs such as noise, pulsation, pulling, soft pedal, or brake warning light to identify the fault before driving or seeking repair.

jeffreytse/grimoire-core · 39 tokens

diagnose-check-engine-light

Use when a check engine light is illuminated and you need to identify the fault code, assess severity, and decide next steps.

jeffreytse/grimoire-core · 30 tokens

diagnose-electrical-fault

Use when a vehicle has a blown fuse, inoperative accessory, warning light, or intermittent electrical failure — applying a systematic test sequence (visual, OBD-II codes, voltage/continuity testing) to isolate the fault to a specific component or circuit without replacing parts blindly.

jeffreytse/grimoire-core · 62 tokens