solid

Apply SOLID design principles to structure classes and modules.

5|Updated Jan 31, 2026
One-click install
npx skills add https://github.com/onesyntax/skills --skill solid-onesyntax
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: solid
Source: https://github.com/onesyntax/skills/tree/main/skills/solid
Command: npx skills add https://github.com/onesyntax/skills --skill solid-onesyntax

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

SOLID principles help developers design clearer, maintainable classes and modules by promoting separation of concerns and reducing coupling. This skill activates when designing new classes, reviewing responsibilities, or when discussing interfaces or abstractions, ensuring teams create robust, extensible architectures.

Core Features & Use Cases

  • Understand and apply SRP, OCP, LSP, ISP, and DIP to real-world code.
  • Review module boundaries and interface design to improve testability and flexibility.
  • Use cases include refactoring existing codebases to align with SOLID principles and performing architectural reviews.

Quick Start

Propose a quick design review checklist to begin applying SOLID in your project.

Frequently Asked Questions about solid

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

FAQPage Schema
How do I apply SOLID principles to refactor an existing codebase?

This skill provides actionable guidelines and step-by-step refactoring checks to apply SOLID principles. It helps review class responsibilities and interface design to reduce coupling and improve testability across languages.

What is the best way to structure classes and modules for better maintainability?

The best way to structure classes for maintainability is to apply SOLID design principles, which promote separation of concerns and reduce coupling. Reviewing module boundaries ensures teams create robust, extensible architectures.

Can I use SOLID design principles for architectural reviews across different programming languages?

Yes, SOLID design principles apply universally across languages and projects during architectural reviews. The guidelines require no external tools and focus on actionable checks for module boundaries and interface design.

When do I need to review interface design and module boundaries?

You need to review interface design and module boundaries when designing new classes, reviewing responsibilities, or discussing abstractions. This ensures you create robust, extensible architectures with improved testability and flexibility.

How do I start a quick design review using SOLID principles?

To start a quick design review using SOLID principles, propose a quick design review checklist to examine SRP, OCP, LSP, ISP, and DIP. Use actionable guidelines and diagrams to evaluate class responsibilities and separation of concerns.