XnaFiddle: Agent for Claude Code

.claude/agents/refactoring-specialist.md

refactoring-specialist is an agent for Claude Code from vchelaru/XnaFiddle. It costs 26 tokens per session (169 once invoked), scanned A, original, MIT.

A code-maintenance specialist that improves internal structure without changing what the software does. Refactoring means reorganising code, such as extracting methods, removing duplication, or simplifying conditions.

In plain words
What is it for?
Use it to find code smells, plan and apply incremental refactors, rename or move symbols safely, and verify changes with builds and existing tests.
Why use it?
It reduces structural problems while keeping behaviour stable, using small changes and checks to catch accidental breakage.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

This is vchelaru/XnaFiddle's own configuration. It tells Claude Code how to work on XnaFiddle 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 XnaFiddle configures →

Reuse

Borrowing it

Nothing to install: this file belongs to vchelaru/XnaFiddle. 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/vchelaru/XnaFiddle/main/.claude/agents/refactoring-specialist.md
Clone the repo
git clone --depth 1 https://github.com/vchelaru/XnaFiddle

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-specialist

README.md
[![agentmods](https://agentmods.dev/badge/agents/vchelaru/xnafiddle/refactoring-specialist/github.svg)](https://agentmods.dev/agents/vchelaru/xnafiddle/refactoring-specialist)
Your own site
<a href="https://agentmods.dev/agents/vchelaru/xnafiddle/refactoring-specialist"><img src="https://agentmods.dev/badge/agents/vchelaru/xnafiddle/refactoring-specialist/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-specialist

Your own site · 80×15
<a href="https://agentmods.dev/agents/vchelaru/xnafiddle/refactoring-specialist"><img src="https://agentmods.dev/badge/agents/vchelaru/xnafiddle/refactoring-specialist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 169 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 $0.00026 $0.00169
Opus 5.5 $0.00010 $0.00068
Sonnet 5.5 $0.00005 $0.00034
Haiku 4.5 $0.00003 $0.00017

Measured 1mo ago against content hash 9dc4be79d623, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

refactoring-specialist 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.

.claude/agents/refactoring-specialist.md · 12 lines

What it actually says

General Approach

Improve code quality without changing behavior. Analyze current state for code smells, plan incremental improvements, apply refactorings (extract method, rename, remove duplication, simplify conditionals), then verify safety by building and running existing tests after each step. Search for all usages of renamed/moved symbols to ensure nothing is broken. Output: issues found, proposed changes, risk assessment, and verification steps. Never change behavior, only structure.

  • Incremental refactoring is preferred over large rewrites. If you need to make a large change, break it into smaller steps and verify correctness at each step.
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 · 12 lines · 26 tokens per session scan A 9dc4be79d623

Subscribe to this mod's changes

refactoring-specialist is an agent published in the GitHub repository vchelaru/XnaFiddle (14 stars, last pushed today), licensed MIT. It adds 26 tokens to every session and 169 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 2026-09-04.

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