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solid-principles

Apply SOLID principles to review and refactor object-oriented class designs.

9|Updated Feb 21, 2026
Search Tags:#code quality#refactoring#design patterns#maintainability#solid principles#object-oriented design
One-click install
npx skills add https://github.com/pantheon-org/tekhne --skill solid-principles-pantheon-org
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: solid-principles
Source: https://github.com/pantheon-org/tekhne/tree/main/skills/software-engineering/design-principles/solid-principles
Command: npx skills add https://github.com/pantheon-org/tekhne --skill solid-principles-pantheon-org

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps developers write more maintainable, flexible, and understandable object-oriented code by applying the SOLID design principles.

Core Features & Use Cases

  • Class Design Review: Identifies violations of the Single Responsibility Principle (SRP).
  • Extensibility Assessment: Checks for adherence to the Open-Closed Principle (OCP).
  • Interface Design: Guides the segregation of interfaces based on client needs (ISP) and ensures subtypes adhere to base contracts (LSP).
  • Dependency Management: Promotes the Dependency Inversion Principle (DIP) by encouraging abstraction.
  • Use Case: Refactor a monolithic UserService class that handles user authentication, profile management, and email notifications into smaller, more focused classes like AuthenticationService, UserProfileService, and NotificationService.

Quick Start

Review the OrderService class for any violations of the SOLID principles.

Frequently Asked Questions about solid-principles

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

FAQPage Schema
How do I refactor a class that handles too many responsibilities?▼

Refactoring a class with too many responsibilities involves applying the Single Responsibility Principle to extract methods and split logic into focused classes. This reduces coupling and improves overall maintainability of object-oriented code.

What is the best way to design extensible interfaces for client needs?▼

Designing extensible interfaces requires applying the Interface Segregation Principle to split fat interfaces based on client needs. This ensures object-oriented design flexibility and prevents forcing clients to depend on methods they do not use.

How do I check if my subtype violates the base class contract?▼

Checking subtype contracts involves analyzing code against the Liskov Substitution Principle. This ensures derived classes adhere to base class behavior without altering expected correctness, maintaining reliable polymorphism in object-oriented systems.

How do I manage dependencies to promote abstraction in object-oriented design?▼

Managing dependencies to promote abstraction relies on the Dependency Inversion Principle. High-level modules should depend on abstractions rather than concrete implementations, decoupling your code and increasing its flexibility for future modifications.

When should I apply the Open-Closed Principle during code review?▼

Apply the Open-Closed Principle during code review when assessing class extensibility. This ensures your object-oriented code allows behavior extension through abstraction without modifying existing source, preventing regressions and maintaining stability.

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