refactoring-patterns

A measurement-based skill for restructuring code by measuring its condition first, applying a refactoring, and measuring again before keeping the change.

In plain words
What is it for?
Use it to simplify complex code, extract large functions, reduce nesting, remove duplication, rename or restructure across files, or perform mechanical changes in bulk.
Why use it?
It helps ensure that cleanup actually improves the code instead of merely moving complexity or introducing broad, unnecessary changes.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/benkapner/claude-code-basecamp/refactoring-patterns
Any agent
npx skills add Benkapner/claude-code-basecamp --skill refactoring-patterns
Clone the repo
git clone --depth 1 https://github.com/Benkapner/claude-code-basecamp

Made for: Claude Code, Codex.

Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 187 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00042 $0.00187
Opus 5 $0.00021 $0.00093
Sonnet 5 $0.00008 $0.00037
Haiku 4.5 $0.00004 $0.00019

Measured 2d ago against content hash 8093d91b931c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

refactoring-patterns 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 2d 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.

skills/refactoring-patterns/SKILL.md · 25 lines

What it actually says

Refactoring Patterns

Measure before. Refactor. Measure after. Keep only if it improved.

When to Activate

  • When the user says "refactor", "clean up", "simplify", "this code is messy"
  • When code has high complexity, deep nesting, or large functions
  • When extracting, renaming, or restructuring across multiple files
  • When consolidating duplicated code

Process

Read skills/refactoring-process.md for the measure-refactor-measure workflow, extraction patterns, and bulk refactoring mode.

Behavioral Rules

Read guidelines.md for measurement requirements, revert criteria, and scope limits.

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 25 lines · 42 tokens per session scan A 8093d91b931c

Subscribe to this mod's changes

refactoring-patterns is a skill published in the GitHub repository Benkapner/claude-code-basecamp (16 stars, last pushed 13d ago), licensed MIT. It adds 42 tokens to every session and 187 once invoked, about $0.0002 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 2026-08-30.

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