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Agent skill

Refactor

by vchelaru in vchelaru/FlatRedBall

This skill should be used when the user asks to refactor code, do a refactor pass, clean up code, extract a class or service, inject a dependency, or make incremental improvements to existing code…

MITAuto-check passedDevelopment

Install Refactor

skills CLI
$ npx skills add vchelaru/FlatRedBall --skill refactor -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install vchelaru/FlatRedBall refactor --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/vchelaru/FlatRedBall.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/refactor .claude/skills/refactor && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
refactor
GitHub stars
578
Token cost
~280 tokens
SKILL.md length
131 words
Files
1
Skills in repo
32
Repo updated
First seen
Licence
MIT

At a glance

This skill should be used when the user asks to refactor code, do a refactor pass, clean up code, extract a class or service, inject a dependency, or make incremental improvements to existing code…

  • Asks to refactor code
  • SKILL.md covers Core principle and What this means in practice
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Do a refactor pass

What it does

Refactor is an agent skill from vchelaru/FlatRedBall. This skill should be used when the user asks to refactor code, do a refactor pass, clean up code, extract a class or service, inject a dependency, or make incremental improvements to existing code structure.

Its SKILL.md is about 280 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Refactoring. The repository describes itself as: Cross-platform 2D game engine focused on ultimate productivity built in .NET. The licence is MIT.

When your agent uses it

  • Asks to refactor code
  • Do a refactor pass
  • Extract a class
  • Inject a dependency

Example prompts

  • “/refactor”

What it can do on your machine

Read from SKILL.md and the folder at commit fa654ab. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Refactor loads about 280 tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 131 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~54
When it runs · the whole SKILL.md, loaded when a task matches
~280

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from vchelaru/FlatRedBall at commit fa654ab, republished under its MIT licence (© vchelaru). 131 words, ~280 tokens.

Download SKILL.mdSave it as .claude/skills/refactor/SKILL.md (or your agent's skills folder).
name
refactor
description
This skill should be used when the user asks to refactor code, do a refactor pass, clean up code, extract a class or service, inject a dependency, or make incremental improvements to existing code structure.
version
1.0.0

Refactoring in Glue

See REFACTORING.md for the full philosophy, checklist, and status of ongoing refactoring efforts.

Core principle

Incremental is good. A small step in the right direction — even if it doesn't finish the job — is valuable. You do not need to complete an entire refactor in one pass. Leave the code measurably better without rewriting everything at once.

What this means in practice

  • A partial extraction (e.g., moving 3 methods into a new service) is a valid, shippable change.
  • A forwarding stub that preserves existing call sites while introducing a seam is a valid, shippable change.
  • If a full fix requires touching too many things at once, find the smallest safe slice and do that.
  • Zero behavior change is the goal for each individual refactoring step. New behavior comes after.

© vchelaru, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .claude/skills/refactor of vchelaru/FlatRedBall.

Open the folder on GitHubat commit fa654ab

Compare with similar skills

Refactor next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Refactor compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Refactor this skillvchelaru/FlatRedBall578—~280Automated safety check: PassMIT
Guidelinesakash-network/node1.1k20 repos~577Automated safety check: PassMIT
Component Refactoringlangflow-ai/langflow155k—~3.5kAutomated safety check: PassMIT
Migrate Core Code to Submodulestinyhumansai/openhuman42k—~2.6kAutomated safety check: PassGPL-3.0
ast-grep Structural Searchcode-yeongyu/oh-my-openagent70k—~3.3kAutomated safety check: PassMIT
Systematic Code Refactoringluongnv89/claude-howto42k—~3kAutomated safety check: PassMIT

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Categories

Questions about Refactor

What does Refactor do?

This skill should be used when the user asks to refactor code, do a refactor pass, clean up code, extract a class or service, inject a dependency, or make incremental improvements to existing code…. Refactor is an agent skill from vchelaru/FlatRedBall. This skill should be used when the user asks to refactor code, do a refactor pass, clean up code, extract a class or service, inject a dependency, or make incremental improvements to existing code structure.

When should I use Refactor?

Refactor fits situations like: asks to refactor code; do a refactor pass; extract a class; inject a dependency.

How do I install Refactor in Claude Code?

Run `npx skills add vchelaru/FlatRedBall --skill refactor -a claude-code`. Or copy the skill folder (.claude/skills/refactor in vchelaru/FlatRedBall) into .claude/skills/refactor in your project. Claude Code loads it when a task matches its description.

How do I install Refactor in Codex?

Run `npx skills add vchelaru/FlatRedBall --skill refactor -a codex`. Or copy the skill folder (.claude/skills/refactor in vchelaru/FlatRedBall) into .agents/skills/refactor in your project. Codex loads it when a task matches its description.

Can I use Refactor in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add vchelaru/FlatRedBall --skill refactor -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/refactor, .gemini/skills/refactor, .github/skills/refactor and .opencode/skills/refactor in your project.

What does Refactor need to run?

SKILL.md names no scripts, command-line tools or credentials: Refactor is instructions for the agent only.

Does Refactor access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Refactor safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Refactor use?

Refactor is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Refactor use?

About 280 tokens (SKILL.md is roughly 1.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Refactor?

Skills that share tags, products or a category with Refactor: Guidelines (akash-network/node, 1.1k stars), Component Refactoring (langflow-ai/langflow, 155k stars), Migrate Core Code to Submodules (tinyhumansai/openhuman, 42k stars) and ast-grep Structural Search (code-yeongyu/oh-my-openagent, 70k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Refactor?

vchelaru (a GitHub user) maintains it in vchelaru/FlatRedBall, which has 578 GitHub stars. The repository holds 32 skills in this directory. The repository was last updated on October 8, 2026.

Source: vchelaru/FlatRedBall on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.