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RuboCop MCP Server

by ishtiaque05
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RuboCop MCP Server

A Model Context Protocol (MCP) server that provides RuboCop and Rails linting capabilities to AI assistants like Claude and Cursor.

CI License: MIT

Features

  • RuboCop Integration: Run RuboCop linting with Rails-specific cops

  • Auto-correction: Automatically fix style violations

  • Smart Pagination: Handle large cop lists efficiently

  • Auto-lint Mode: Automatic linting reminders for AI assistants

  • Flexible Filtering: Run specific cops or departments

  • Gradual Adoption: Generate .rubocop_todo.yml for existing projects

Related MCP server: Vale MCP Server

Quick Start

Prerequisites

# Install RuboCop
gem install rubocop rubocop-rails

# Or add to your Rails Gemfile
# gem 'rubocop', require: false
# gem 'rubocop-rails', require: false

Installation

# 1. Clone and build
git clone https://github.com/yourusername/rubocop-mcp.git
cd rubocop-mcp
yarn install && yarn build

# 2. Add to Claude CLI
claude mcp add --transport stdio rubocop -- node $(pwd)/build/index.js

# 3. Verify
claude mcp list

Usage

Start Claude in your Rails project and ask:

Lint app/models/user.rb
Check app/controllers for Rails violations and auto-fix them
List all available Rails cops

That's it! See Installation Guide for detailed setup instructions.

Available Tools

Tool

Description

rubocop_lint

Run RuboCop on files with auto-correction support

rubocop_list_cops

List available cops with pagination

rubocop_show_cop

Show detailed cop information

rubocop_auto_gen_config

Generate .rubocop_todo.yml for gradual adoption

rubocop_set_auto_lint

Enable/disable automatic linting reminders

rubocop_get_auto_lint_status

Check auto-lint configuration

See API Reference for complete documentation.

Documentation

Project Structure

rubocop-mcp/
├── src/              # TypeScript source code
├── build/            # Compiled JavaScript
├── docs/             # Documentation
├── examples/         # Configuration examples
├── test/             # Test files
└── package.json      # Project configuration

Contributing

Contributions are welcome! Please see CONTRIBUTING.md for guidelines.

License

MIT

Support

This server cannot be deployed

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Maintenance

ActivityInactive
ResponsivenessNo issues

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