refactor-code-with-ai

refactor-code-with-ai is a skill for Claude Code, Codex from djscheuf/agentic-dev-ecosystem-template. It costs 29 tokens per session (1,596 once invoked), scanned A, original, MIT.

An AI-assisted code-cleanup workflow that improves existing code while its tests continue to pass. Refactoring means changing the code's structure without changing what it does.

In plain words
What is it for?
Use it after implementing a feature, when tests are already passing, or when code smells appear. It guides changes such as renaming, extracting constants, simplifying conditions, and splitting large methods or classes.
Why use it?
It helps remove duplication, unclear names, dead code, and overly complicated structures while preserving tested behavior.

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/djscheuf/agentic-dev-ecosystem-template/refactor-code-with-ai
Any agent
npx skills add djscheuf/agentic-dev-ecosystem-template --skill refactor-code-with-ai
Clone the repo
git clone --depth 1 https://github.com/djscheuf/agentic-dev-ecosystem-template

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-code-with-ai

README.md
[![agentmods](https://agentmods.dev/badge/skills/djscheuf/agentic-dev-ecosystem-template/refactor-code-with-ai.svg)](https://agentmods.dev/skills/djscheuf/agentic-dev-ecosystem-template/refactor-code-with-ai)
Your own site
<a href="https://agentmods.dev/skills/djscheuf/agentic-dev-ecosystem-template/refactor-code-with-ai"><img src="https://agentmods.dev/badge/skills/djscheuf/agentic-dev-ecosystem-template/refactor-code-with-ai.svg" alt="Measured on agentmods" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,596 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 $0.00029 $0.01596
Opus 5 $0.00015 $0.00798
Sonnet 5 $0.00006 $0.00319
Haiku 4.5 $0.00003 $0.00160

Measured 3d ago against content hash ba2233328f4d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

refactor-code-with-ai 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 3d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (verify.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.devin/skills/refactor-code-with-ai/SKILL.md · 280 lines

How it starts

The opening of the file, as written. The whole thing — 280 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Workflow Steps

TDD-Refactor Workflow

Purpose

Improve code quality, remove duplication, and enhance design while keeping all tests green.

Trigger

  • After code has been implemented and all tests are passing
  • Code smells detected
  • Duplication exists
  • Design can be improved

Prerequisites

  • All tests passing (green)
  • Code successfully implements required behavior
  • Understanding of refactoring techniques

Workflow Steps

Step 1: Identify Refactoring Opportunities

Review code for:

DUPLICATION:
- [ ] Repeated code blocks
- [ ] Similar methods that could be unified
- [ ] Copy-pasted logic

NAMING:
- [ ] Unclear variable names
- [ ] Method names that don't describe behavior
- [ ] Magic numbers without constants

STRUCTURE:
- [ ] Long methods (>20 lines)
- [ ] Deep nesting (>3 levels)
- [ ] Large classes (>200 lines)
- [ ] Missing abstractions

SOLID VIOLATIONS:
- [ ] Class doing too much (SRP)
- [ ] Rigid dependencies (DIP)
- [ ] Large interfaces (ISP)

Step 2: Prioritize Refactorings

Order by impact and safety:

HIGH PRIORITY (Safe, high impact):
1. Rename for clarity
2. Extract constants
3. Remove dead code
4. Simplify conditionals

MEDIUM PRIORITY (Moderate risk):
5. Extract methods
6. Extract classes
7. Introduce parameters

LOW PRIORITY (Higher risk, do carefully):
8. Change method signatures
9. Restructure inheritance
10. Modify public APIs

Step 3: Apply ONE Refactoring

IMPORTANT: One change at a time!

1. Make a single, focused change
2. Run all tests immediately
3. Verify tests still pass
4. Commit if green
5. Repeat for next refactoring

Step 4: Run Tests After Each Change

After EVERY refactoring step:

$ dotnet test        # C#
$ pytest            # Python
$ npm test          # TypeScript

If ANY test fails:
- STOP immediately
- Undo the change
- Understand why it broke
- Try a smaller step

Step 5: Review Refactored Code

Verify improvements:
- [ ] Code is more readable
- [ ] Duplication is reduced
- [ ] Names are clearer
- [ ] Structure is simpler
- [ ] All tests still pass
- [ ] No new functionality added

Read the full file on GitHub · 280 lines

Files

What ships with it

3 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. 3d ago First seen · 280 lines · 29 tokens per session scan A ba2233328f4d

Subscribe to this mod's changes

refactor-code-with-ai is a skill published in the GitHub repository djscheuf/agentic-dev-ecosystem-template (12 stars, last pushed 4d ago), licensed MIT. It adds 29 tokens to every session and 1,596 once invoked, about $0.0001 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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