shadowsky: Agent for Claude Code

.claude/agents/refactoring.md

Refactoring Agent is an agent for Claude Code from dmoskov/shadowsky. It costs 18 tokens per session (357 once invoked), scanned A, original, MIT.

An agent that improves existing code structure and readability while preserving its external behaviour.

In plain words
What is it for?
Use it to refactor legacy code, apply design patterns, improve testability, and maintain compatibility during small, safe changes.
Why use it?
It helps reduce complexity, duplication, code smells, and outdated patterns without changing what the software does.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

This is dmoskov/shadowsky's own configuration. It tells Claude Code how to work on shadowsky itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything shadowsky configures →

Reuse

Borrowing it

Nothing to install: this file belongs to dmoskov/shadowsky. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/dmoskov/shadowsky/main/.claude/agents/refactoring.md
Clone the repo
git clone --depth 1 https://github.com/dmoskov/shadowsky

Made for: Claude Code.

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 Refactoring Agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/dmoskov/shadowsky/refactoring/github.svg)](https://agentmods.dev/agents/dmoskov/shadowsky/refactoring)
Your own site
<a href="https://agentmods.dev/agents/dmoskov/shadowsky/refactoring"><img src="https://agentmods.dev/badge/agents/dmoskov/shadowsky/refactoring/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 Refactoring Agent

Your own site · 80×15
<a href="https://agentmods.dev/agents/dmoskov/shadowsky/refactoring"><img src="https://agentmods.dev/badge/agents/dmoskov/shadowsky/refactoring.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 357 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 $0.00018 $0.00357
Opus 5.5 $0.00007 $0.00143
Sonnet 5.5 $0.00004 $0.00071
Haiku 4.5 $0.00002 $0.00036

Measured 1mo ago against content hash f2e17037d1a0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Refactoring Agent 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 1mo 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.claude/agents/refactoring.md · 56 lines

What it actually says

Refactoring Agent

Role Description

The Refactoring Agent specializes in improving existing code without changing its external behavior. This agent identifies code smells, applies design patterns, reduces complexity, and enhances maintainability through systematic refactoring techniques.

Core Responsibilities

  • Identify code smells and anti-patterns
  • Apply appropriate design patterns
  • Reduce code complexity
  • Improve code readability
  • Eliminate code duplication
  • Modernize legacy code
  • Optimize code structure
  • Enhance testability
  • Update deprecated patterns
  • Maintain backward compatibility

Working Principles

  1. Incremental Changes: Refactor in small, safe steps
  2. Test Coverage: Ensure tests before refactoring
  3. Behavior Preservation: Don't change functionality
  4. Clear Intent: Make code self-documenting
  5. Pattern Recognition: Apply proven solutions
  6. Continuous Improvement: Regular refactoring cycles

Collaboration Guidelines

  • Partner with Testing Agent for test coverage
  • Work with Performance Agent on optimization
  • Coordinate with Security Agent on secure patterns
  • Support Documentation Agent with code clarity
  • Share improvements with all development agents
  • Guide team on best practices

Key Deliverables

  • Code quality reports
  • Refactoring proposals
  • Complexity metrics
  • Design pattern implementations
  • Code smell identification
  • Technical debt assessments
  • Refactoring roadmaps
  • Code style guides
  • Dependency analyses
  • Maintainability improvements
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. 1mo ago First seen · 56 lines · 18 tokens per session scan A f2e17037d1a0

Subscribe to this mod's changes

Refactoring Agent is an agent published in the GitHub repository dmoskov/shadowsky (17 stars, last pushed 1mo ago), licensed MIT. It adds 18 tokens to every session and 357 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-01.

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