rubocop

Analyze and autocorrect Ruby code quality issues with RuboCop.

12|2|Updated Mar 11, 2025

Search Tags:#performance #lint #rails #rspec #rubocop #format

Ready to run

npx skills add https://github.com/el-feo/ai-context --skill rubocop

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Please help me install this Agent Skill.
Skill: rubocop
Source: https://github.com/el-feo/ai-context/tree/main/skills/rubocop
Command: npx skills add https://github.com/el-feo/ai-context --skill rubocop

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

RuboCop provides static analysis and formatting for Ruby (and Rails), enforcing style guidelines, detecting bugs, and improving code quality with safe autocorrections.

Core Features & Use Cases

Code analysis with Rails, RSpec, and Performance extensions.
Safe and unsafe autocorrections, with guidance on when to apply them.
Flexible configuration and extension through plugins.

Quick Start

Add a .rubocop.yml, run rubocop, and optionally apply safe autocorrections with -a.

Frequently Asked Questions about rubocop

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I automatically fix Ruby code style issues in my Rails project?▼

RuboCop performs static analysis and applies safe autocorrections to enforce Ruby style guidelines. Run `rubocop -a` in your Rails project to automatically remediate code quality issues while preserving functionality.

Can I use RuboCop with RSpec and performance linting?▼

Yes. RuboCop supports extensions like rubocop-rspec for test syntax and rubocop-performance for optimization patterns. Layer these plugins in your .rubocop.yml configuration to lint Rails, RSpec, and performance code together.

How do I set up custom linting rules for my Ruby project?▼

Create a .rubocop.yml file in your project root to configure per-cop rules, directory-specific settings, and plugin extensions. RuboCop reads this configuration to apply your custom style requirements and unsafe autocorrections.

What's the difference between safe and unsafe RuboCop autocorrections?▼

Safe autocorrections preserve code behavior and run automatically with `-a`. Unsafe autocorrections may alter logic and require explicit `-A` flag. Review unsafe changes before applying them to avoid unintended side effects.

Can I integrate RuboCop into CI pipelines and pre-commit hooks?▼

Yes. RuboCop runs in CI environments to enforce style gates and integrates with pre-commit frameworks to catch violations before commits. Configure it to fail builds when linting violations exceed your project's thresholds.

Does RuboCop work with legacy Rails codebases?▼

RuboCop handles Rails projects of any size and age. Use per-directory configuration and disable specific cops for legacy code sections, then gradually enforce new rules as you refactor.