Can I use this skill to refactor existing legacy code?

Yes, it is specifically designed to provide patterns and guidance for migrating from tightly coupled architectures to loosely coupled, maintainable systems.

Is this skill restricted to a specific programming language?

The architectural principles are language-agnostic, though the skill provides implementation patterns and directory structures that work across Python, TypeScript, Java, and other backend languages.

Does this skill help with microservices decomposition?

Yes, the Domain-Driven Design principles included help define Bounded Contexts, which are essential for identifying service boundaries in microservices.

How does this skill improve code testability?

By enforcing a separation between business logic and infrastructure (like databases and APIs), it allows you to easily mock external dependencies for comprehensive unit testing.

What architectural patterns does this skill support?

This skill supports Clean Architecture (Uncle Bob), Hexagonal Architecture (Ports and Adapters), and Domain-Driven Design (DDD) principles.

Architecture Patterns

Name: Architecture Patterns
Author: secondsky

bysecondsky

•

API Development

Implements production-ready backend architectures including Clean Architecture, Hexagonal Architecture, and Domain-Driven Design.

This skill empowers developers to build maintainable and scalable backend systems by applying industry-standard architectural principles. It provides concrete implementation patterns for Clean Architecture's inward-pointing dependency flow, Hexagonal Architecture's ports-and-adapters model, and Domain-Driven Design's tactical patterns like aggregates and value objects. Whether you are architecting a new system from scratch or refactoring a legacy monolith into a modular, microservices-ready codebase, this skill ensures your business logic remains testable and framework-independent.

Key Features

01Clean Architecture implementation with strict dependency layer enforcement

02Hexagonal Architecture (Ports and Adapters) for infrastructure decoupling

03Domain-Driven Design (DDD) tactical patterns including Aggregates and Repositories

04Standardized directory structures for modular system organization

05Guidance on creating framework-agnostic core business logic

0621 GitHub stars

Use Cases

01Establishing architecture standards and ubiquitous language for development teams

02Designing a new backend system with a focus on long-term maintainability

03Refactoring tightly coupled monolithic applications into modular structures

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add secondsky/claude-skills architecture-patterns

For use in Claude.ai and ChatGPT

Download Skill