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Agent skill

Ruby Pro

by davila7 in davila7/claude-code-templates

Write idiomatic Ruby code with metaprogramming, Rails patterns, and performance optimization.

MITAuto-check passedDevelopment

Install Ruby Pro

skills CLI
$ npx skills add davila7/claude-code-templates --skill ruby-pro -a claude-code

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

GitHub CLI
$ gh skill install davila7/claude-code-templates ruby-pro --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/davila7/claude-code-templates.git skills-src && mkdir -p .claude/skills && cp -r skills-src/cli-tool/components/skills/development/ruby-pro .claude/skills/ruby-pro && 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
ruby-pro
GitHub stars
32k
Used in
7 other repos
Token cost
~445 tokens
SKILL.md length
193 words
Files
1
Skills in repo
477
Repo updated
First seen
Licence
MIT

At a glance

Write idiomatic Ruby code with metaprogramming, Rails patterns, and performance optimization.

  • Works in 5 steps: Embrace Ruby's expressiveness and… → Follow Ruby and Rails conventions and… → Use blocks and enumerables effectively → …
  • Tasks that involve Backend development
  • SKILL.md covers Use this skill when, Do not use this skill when, Instructions and Focus Areas, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Ruby Pro is an agent skill from davila7/claude-code-templates. Write idiomatic Ruby code with metaprogramming, Rails patterns, and performance optimization. Specializes in Ruby on Rails, gem development, and testing frameworks.

Its SKILL.md is about 450 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 Backend development and Performance optimization. It works with Ruby and Ruby on Rails. The repository describes itself as: CLI tool for configuring and monitoring Claude Code. The licence is MIT.

When your agent uses it

  • Tasks that involve Backend development
  • Tasks that involve Performance optimization

Example prompts

  • “/ruby-pro”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Embrace Ruby's expressiveness and metaprogramming features
  2. Follow Ruby and Rails conventions and idioms
  3. Use blocks and enumerables effectively
  4. Handle exceptions with proper rescue/ensure patterns
  5. Optimize for readability first, performance second

What it can do on your machine

Read from SKILL.md and the folder at commit 4c82aba. 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

Ruby Pro loads about 445 tokens when it runs. Until then it costs about 43 tokens; SKILL.md has 193 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~43
When it runs · the whole SKILL.md, loaded when a task matches
~445

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 davila7/claude-code-templates at commit 4c82aba, republished under its MIT licence (© davila7). 193 words, ~445 tokens.

Download SKILL.mdSave it as .claude/skills/ruby-pro/SKILL.md (or your agent's skills folder).
name
ruby-pro
description
Write idiomatic Ruby code with metaprogramming, Rails patterns, and performance optimization. Specializes in Ruby on Rails, gem development, and testing frameworks.
risk
unknown
source
community
date_added
2026-02-27

Use this skill when

  • Working on ruby pro tasks or workflows
  • Needing guidance, best practices, or checklists for ruby pro

Do not use this skill when

  • The task is unrelated to ruby pro
  • You need a different domain or tool outside this scope

Instructions

  • Clarify goals, constraints, and required inputs.
  • Apply relevant best practices and validate outcomes.
  • Provide actionable steps and verification.
  • If detailed examples are required, open resources/implementation-playbook.md.

You are a Ruby expert specializing in clean, maintainable, and performant Ruby code.

Focus Areas

  • Ruby metaprogramming (modules, mixins, DSLs)
  • Rails patterns (ActiveRecord, controllers, views)
  • Gem development and dependency management
  • Performance optimization and profiling
  • Testing with RSpec and Minitest
  • Code quality with RuboCop and static analysis

Approach

  1. Embrace Ruby's expressiveness and metaprogramming features
  2. Follow Ruby and Rails conventions and idioms
  3. Use blocks and enumerables effectively
  4. Handle exceptions with proper rescue/ensure patterns
  5. Optimize for readability first, performance second

Output

  • Idiomatic Ruby code following community conventions
  • Rails applications with MVC architecture
  • RSpec/Minitest tests with fixtures and mocks
  • Gem specifications with proper versioning
  • Performance benchmarks with benchmark-ips
  • Refactoring suggestions for legacy Ruby code

Favor Ruby's expressiveness. Include Gemfile and .rubocop.yml when relevant.

© davila7, 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 cli-tool/components/skills/development/ruby-pro of davila7/claude-code-templates.

Open the folder on GitHubat commit 4c82aba

Used in 7 other repositories

We found 16 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 7 other GitHub owners. This page covers the copy in davila7/claude-code-templates, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Ruby Pro 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.

Ruby Pro compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Ruby Pro this skilldavila7/claude-code-templates32k7 repos~445Automated safety check: PassMIT
Rubyericrisco/rsc-harness156—~3.2kAutomated safety check: PassMIT
Antipattern Preventiondoorkeeper-gem/doorkeeper5.5k—~1.1kAutomated safety check: PassMIT
Rails Hotwirepproenca/dot-skills214—~2.3kAutomated safety check: PassMIT
Ruby Optimisepproenca/dot-skills214—~1.7kAutomated safety check: PassMIT
Rails ExpertJeffallan/claude-skills12k—~1.4kAutomated safety check: PassMIT

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Works with

Categories

Questions about Ruby Pro

What does Ruby Pro do?

Write idiomatic Ruby code with metaprogramming, Rails patterns, and performance optimization. Ruby Pro is an agent skill from davila7/claude-code-templates. Write idiomatic Ruby code with metaprogramming, Rails patterns, and performance optimization.

When should I use Ruby Pro?

Ruby Pro fits situations like: tasks that involve Backend development; tasks that involve Performance optimization.

How do I install Ruby Pro in Claude Code?

Run `npx skills add davila7/claude-code-templates --skill ruby-pro -a claude-code`. Or copy the skill folder (cli-tool/components/skills/development/ruby-pro in davila7/claude-code-templates) into .claude/skills/ruby-pro in your project. Claude Code loads it when a task matches its description.

How do I install Ruby Pro in Codex?

Run `npx skills add davila7/claude-code-templates --skill ruby-pro -a codex`. Or copy the skill folder (cli-tool/components/skills/development/ruby-pro in davila7/claude-code-templates) into .agents/skills/ruby-pro in your project. Codex loads it when a task matches its description.

Can I use Ruby Pro 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 davila7/claude-code-templates --skill ruby-pro -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ruby-pro, .gemini/skills/ruby-pro, .github/skills/ruby-pro and .opencode/skills/ruby-pro in your project.

What does Ruby Pro need to run?

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

Does Ruby Pro 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 Ruby Pro 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 Ruby Pro use?

Ruby Pro 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 Ruby Pro use?

About 445 tokens (SKILL.md is roughly 1.8k 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 Ruby Pro?

Skills that share tags, products or a category with Ruby Pro: Ruby (ericrisco/rsc-harness, 156 stars), Antipattern Prevention (doorkeeper-gem/doorkeeper, 5.5k stars), Rails Hotwire (pproenca/dot-skills, 214 stars) and Ruby Optimise (pproenca/dot-skills, 214 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Ruby Pro?

davila7 (a GitHub user) maintains it in davila7/claude-code-templates, which has 32,432 GitHub stars. The repository holds 477 skills in this directory. The repository was last updated on October 7, 2026.

Source: davila7/claude-code-templates on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.