What is the 'Library-First' approach mentioned in the skill?

It is a principle that requires searching for existing, well-maintained libraries (like npm packages or SaaS solutions) before writing custom code to reduce long-term maintenance overhead.

What architectural patterns does this skill follow?

This skill is primarily based on Clean Architecture and Domain-Driven Design (DDD) principles, focusing on separation of concerns and business logic independence.

Does this skill enforce specific code formatting?

Yes, it promotes the early return pattern, arrow functions, and limits functions to 50-80 lines and files to 200 lines to ensure code remains modular and readable.

How does it improve code quality?

By enforcing typed catch blocks, limiting nesting depth to three levels, and ensuring business logic is never mixed with UI components or direct database queries.

How does this skill handle naming conventions?

It actively discourages generic names like 'utils', 'helpers', or 'common' in favor of domain-specific names such as 'UserAuthenticator' or 'InvoiceGenerator'.

Software Architecture & Clean Code

Name: Software Architecture & Clean Code
Author: lev-os

bylev-os

0•

API Development

Implements quality-focused software development patterns based on Clean Architecture and Domain-Driven Design principles.

This skill equips Claude with the expertise to guide developers through complex architectural decisions, emphasizing Clean Architecture and Domain-Driven Design (DDD). It enforces a 'library-first' mentality to minimize technical debt, promotes standardized code styles such as early returns and strict component sizing, and mandates domain-specific naming conventions. By focusing on separation of concerns and ubiquitous language, it helps teams build maintainable, scalable systems while avoiding common anti-patterns like 'Not Invented Here' syndrome and generic utility dumping grounds.

Key Features

010 GitHub stars

02Promotes a 'Library-First' approach to minimize custom code maintenance

03Eliminates generic naming anti-patterns in favor of domain-specific modules

04Standardizes code style with early returns and arrow functions

05Enforces Clean Architecture and Domain-Driven Design (DDD) patterns

06Mandates strict file and function size limits for maximum readability

Use Cases

01Establishing high-quality coding standards and style guides for greenfield projects

02Refactoring legacy monoliths into clear, domain-specific bounded contexts

03Evaluating third-party libraries versus custom implementations for business logic

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add lev-os/agents software-architecture

For use in Claude.ai and ChatGPT

Download Skill