Automated summary
This skill guides the writing of idiomatic Ruby code, covering metaprogramming, Rails patterns, gem development, testing, and performance optimization.
Strengths
- Spans a wide scope: metaprogramming, ActiveRecord, gems, RSpec/Minitest testing, and profiling
- Emphasizes Ruby/Rails conventions and readability before performance
- Produces concrete deliverables: idiomatic code, gem specs, benchmark-ips benchmarks, and refactoring suggestions
- References quality tooling such as RuboCop and includes Gemfile or .rubocop.yml when relevant
Limitations
- Instructions stay generic and defer detailed examples to an external playbook file
- No Ruby or Rails version is specified, so some advice may be outdated
- Does not replace testing or validation inside the project's real environment
Use this skill when writing, refactoring, or testing Ruby and Rails code, or when designing a gem and improving its performance.
Skip it when the task is unrelated to Ruby, such as Python code, JavaScript front-end work, or infrastructure configuration.
Security analysis
SafeThe skill is a guidance document for writing Ruby code. It does not instruct the execution of any commands, does not interact with the system, and contains no destructive, exfiltrating, or obfuscated actions. No allowed tools are declared, and the content is purely advisory.
No concerns found
How this analysis is madename: 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
- Embrace Ruby's expressiveness and metaprogramming features
- Follow Ruby and Rails conventions and idioms
- Use blocks and enumerables effectively
- Handle exceptions with proper rescue/ensure patterns
- 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.
Limitations
- Use this skill only when the task clearly matches the scope described above.
- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.
From the file to a first result
The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.
View the source and supporting filesThis download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.
1. Download the file
Download SKILL.mdFrom the root of a test project, save the file as .skill-downloads/ruby-pro-advanced-development-mrzxuqxq/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.
Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.
mkdir -p '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/ruby-pro-advanced-development-mrzxuqxq/download' --output '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq/SKILL.md.part' && mv '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq/SKILL.md.part' '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq/SKILL.md'2. Check prerequisites
Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.
No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.
The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.
3. Load the skill
After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.
Claude Code
test -f '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq/SKILL.md' && test -s '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/ruby-pro' && cp -R '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq' '.claude/skills/ruby-pro'Cursor
test -f '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq/SKILL.md' && test -s '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq/SKILL.md' && mkdir -p '.cursor/skills' && test ! -e '.cursor/skills/ruby-pro' && cp -R '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq' '.cursor/skills/ruby-pro'Codex
test -f '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq/SKILL.md' && test -s '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq/SKILL.md' && mkdir -p '.agents/skills' && test ! -e '.agents/skills/ruby-pro' && cp -R '.skill-downloads/ruby-pro-advanced-development-mrzxuqxq' '.agents/skills/ruby-pro'OpenSkills
OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.
Official OpenSkills installationopenskills install './.skill-downloads/ruby-pro-advanced-development-mrzxuqxq'openskills read 'ruby-pro-advanced-development-mrzxuqxq'Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.
For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.
openskills syncManual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.
4. Try a first task
Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:
Read .skill-downloads/ruby-pro-advanced-development-mrzxuqxq/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.
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