Legacy Modernization

Rules for incrementally upgrading legacy systems: strangler patterns, compatibility-safe refactors, and test scaffolding before major changes.

Who this is for: Teams inheriting older systems and needing modernization without freeze-risk.

Top Rules to Start With

React Cursor Rules — cursor · react
Next.js Cursor Rules — cursor · nextjs
Data Pipeline & ETL Rules for Aider — aider · python
Data Pipeline & ETL Rules for Claude Code — claude-code · python
Data Pipeline & ETL Rules for Cline — cline · python
Data Pipeline & ETL Rules for Continue — continue · python
Data Pipeline & ETL Rules for Cursor — cursor · python
Data Pipeline & ETL Rules for GitHub Copilot — copilot · python

78 quality-ranked rules

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Generic Refactoring Rules for Amazon Q Developer

Amazon Q Developer

Generic Refactoring Rules adapted for Amazon Q Developer. High-signal generic engineering guidance for real projects.

Refactoring

refactor · maintainabilityCopy Ready

Generic Refactoring Rules for Bolt.new

Bolt.new

Generic Refactoring Rules adapted for Bolt.new. High-signal generic engineering guidance for real projects.

Refactoring

refactor · maintainabilityCopy Ready

Generic Refactoring Rules for Codeium

Codeium

Generic Refactoring Rules adapted for Codeium. High-signal generic engineering guidance for real projects.

Refactoring

refactor · maintainabilityCopy Ready

Generic Refactoring Rules for Lovable

Lovable

Generic Refactoring Rules adapted for Lovable. High-signal generic engineering guidance for real projects.

Refactoring

refactor · maintainabilityCopy Ready

Generic Refactoring Rules for OpenAI Codex

OpenAI Codex

Generic Refactoring Rules adapted for OpenAI Codex. High-signal generic engineering guidance for real projects.

Refactoring

refactor · maintainabilityCopy Ready

Generic Refactoring Rules for Perplexity Labs

Perplexity Labs

Generic Refactoring Rules adapted for Perplexity Labs. High-signal generic engineering guidance for real projects.

Refactoring

refactor · maintainabilityCopy Ready

Generic Refactoring Rules for Replit Agent

Replit Agent

Generic Refactoring Rules adapted for Replit Agent. High-signal generic engineering guidance for real projects.

Refactoring

refactor · maintainabilityCopy Ready

Generic Refactoring Rules for Roo Code

Roo Code

Generic Refactoring Rules adapted for Roo Code. High-signal generic engineering guidance for real projects.

Refactoring

refactor · maintainabilityCopy Ready

Generic Refactoring Rules for Sourcegraph Cody

Sourcegraph Cody

Generic Refactoring Rules adapted for Sourcegraph Cody. High-signal generic engineering guidance for real projects.

Refactoring

refactor · maintainabilityCopy Ready

Generic Refactoring Rules for Tabnine

Tabnine

Generic Refactoring Rules adapted for Tabnine. High-signal generic engineering guidance for real projects.

Refactoring

refactor · maintainabilityCopy Ready

SvelteKit (RESTful API, Tailwind CSS) Rules

CursorSvelte

You are an AI assistant for the Stojanovic-One web application project. Adhere to these guidelines:

Testing

cursor · svelteCopy Ready

Native Mobile App (iOS/Android) Rules for Aider

AiderSwift

Aider coding rules for Native Mobile App (iOS/Android) development. Deep, specific guidance covering architecture, patterns, and best practices.

Performance

aider · mobileCopy Ready

Native Mobile App (iOS/Android) Rules for Claude Code

Claude CodeSwift

Claude Code coding rules for Native Mobile App (iOS/Android) development. Deep, specific guidance covering architecture, patterns, and best practices.

Performance

claude-code · mobileCopy Ready

Native Mobile App (iOS/Android) Rules for Cline

ClineSwift

Cline coding rules for Native Mobile App (iOS/Android) development. Deep, specific guidance covering architecture, patterns, and best practices.

Performance

cline · mobileCopy Ready

Native Mobile App (iOS/Android) Rules for Continue

ContinueSwift

Continue coding rules for Native Mobile App (iOS/Android) development. Deep, specific guidance covering architecture, patterns, and best practices.

Performance

continue · mobileCopy Ready

Native Mobile App (iOS/Android) Rules for Zed

Zed AISwift

Zed coding rules for Native Mobile App (iOS/Android) development. Deep, specific guidance covering architecture, patterns, and best practices.

Performance

zed · mobileCopy Ready

Laravel Cursor Rules

CursorLaravel

Cursor rules for Laravel: Eloquent patterns, service layer design, jobs and queues, and production Laravel best practices.

Architecture

laravel · phpCopy Ready

Testing Claude Rules

Claudetesting

Claude rules for writing high-quality tests: test pyramid strategy, mocking principles, and CI integration.

Testing

testing · claudeCopy Ready

Testing Cline Rules

Clinetesting

Cline rules for testing: advanced testing patterns, observability-driven testing, and test automation.

Testing

testing · clineCopy Ready

Testing GitHub Copilot Instructions

GitHub Copilottesting

GitHub Copilot instructions for testing: test generation, patterns, and coverage conventions.

Testing

testing · copilotCopy Ready

Testing Aider Conventions

Aidertesting

Aider conventions for tests: structure, naming, and testing philosophy for maintainable test suites.

Testing

testing · aiderCopy Ready

.NET Performance Rules for Aider

Aidercsharp

SEO-ready Aider rules for .NET performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

aider · csharpCopy Ready

.NET Performance Rules for Claude Code

Claude Codecsharp

SEO-ready Claude Code rules for .NET performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

claude-code · csharpCopy Ready

.NET Performance Rules for Cline

Clinecsharp

SEO-ready Cline rules for .NET performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

cline · csharpCopy Ready

.NET Performance Rules for Continue

Continuecsharp

SEO-ready Continue rules for .NET performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

continue · csharpCopy Ready

Actix Performance Rules for Aider

AiderRust

SEO-ready Aider rules for Actix performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

aider · rustCopy Ready

Actix Performance Rules for Claude Code

Claude CodeRust

SEO-ready Claude Code rules for Actix performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

claude-code · rustCopy Ready

Actix Performance Rules for Cline

ClineRust

SEO-ready Cline rules for Actix performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

cline · rustCopy Ready

Actix Performance Rules for Zed

Zed AIRust

SEO-ready Zed rules for Actix performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

zed · rustCopy Ready

Alpine.js Performance Rules for Aider

AiderJavaScript

SEO-ready Aider rules for Alpine.js performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

aider · javascriptCopy Ready

Alpine.js Performance Rules for Claude Code

Claude CodeJavaScript

SEO-ready Claude Code rules for Alpine.js performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

claude-code · javascriptCopy Ready

Alpine.js Performance Rules for Cline

ClineJavaScript

SEO-ready Cline rules for Alpine.js performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

cline · javascriptCopy Ready

Alpine.js Performance Rules for Continue

ContinueJavaScript

SEO-ready Continue rules for Alpine.js performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

continue · javascriptCopy Ready

Docker Compose Performance Rules for Aider

AiderBash

SEO-ready Aider rules for Docker Compose performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

aider · bashCopy Ready

Docker Compose Performance Rules for Claude Code

Claude CodeBash

SEO-ready Claude Code rules for Docker Compose performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

claude-code · bashCopy Ready

Docker Compose Performance Rules for Cline

ClineBash

SEO-ready Cline rules for Docker Compose performance with copy-paste instructions, testing guardrails, and production-safe patterns.

Performance

cline · bashCopy Ready

Showing 37-72 of 78

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