design-principles

Reference SOLID, DRY, YAGNI, and separation of concerns for maintainable code design.

3|Updated Feb 11, 2026

Search Tags:#refactoring #yagni #design-principles #solid #software-architecture #separation-of-concerns #dry

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npx skills add https://github.com/deepnoodle-ai/creddit --skill design-principles-deepnoodle-ai

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Please help me install this Agent Skill.
Skill: design-principles
Source: https://github.com/deepnoodle-ai/creddit/tree/main/.claude/skills/design-principles
Command: npx skills add https://github.com/deepnoodle-ai/creddit --skill design-principles-deepnoodle-ai

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

A concise reference of software design principles (SOLID, DRY, YAGNI) and separation of concerns to help developers write more maintainable and scalable code.

Core Features & Use Cases

Clear articulation of core design principles and how they apply to everyday coding tasks.
Practical guidance for applying SOLID, DRY, and YAGNI in real-world architectures.
Use Case: during module design, apply these principles to define responsibilities and clean interfaces.

Quick Start

Review the principles and apply them to your current project to evaluate design decisions and identify refactoring opportunities.

Frequently Asked Questions about design-principles

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

FAQPage Schema

What are the core software design principles for writing maintainable code?▼

Core software design principles for maintainable code include SOLID, DRY, YAGNI, and separation of concerns. They guide developers in defining clear module responsibilities, creating clean interfaces, and building scalable architectures.

How do I apply SOLID principles during module design?▼

Apply SOLID principles during module design by using this structured reference to evaluate design decisions and define responsibilities. It provides practical guidance and concrete examples for creating clean interfaces and identifying refactoring opportunities in real-world architectures.

When should I use the YAGNI principle in software architecture?▼

Use the YAGNI (You Aren't Gonna Need It) principle in software architecture to avoid over-engineering. This reference provides practical guidance on applying YAGNI alongside DRY and SOLID to ensure you only build necessary functionality, improving code maintainability.

How can I identify refactoring opportunities using separation of concerns?▼

Identify refactoring opportunities using separation of concerns by reviewing your current project against these design principles. Evaluate design decisions to detect tightly coupled modules, then apply the structured reference to separate responsibilities and define clean interfaces.

Can I use these design principles for onboarding engineers to robust practices?▼

Yes, you can use these design principles for onboarding engineers to robust practices. The structured reference covers SOLID, DRY, YAGNI, and separation of concerns with concrete examples, making it applicable for training new developers on maintainable coding standards.