How does this skill improve code testability?

By enforcing the separation of business rules from infrastructure and frameworks, it allows you to use mock adapters for external dependencies, making unit testing faster and more reliable.

What architectural patterns does this skill support?

This skill focuses on proven industry patterns including Clean Architecture (Uncle Bob), Hexagonal Architecture (Ports and Adapters), and Domain-Driven Design (DDD).

Can I use this skill to refactor existing legacy code?

Yes, the skill is specifically designed to help identify tight coupling and provide step-by-step guidance on refactoring code into more maintainable, layered structures.

Does it help with microservices decomposition?

Yes, it uses DDD strategic patterns like Bounded Contexts to help you define clear boundaries for microservices, ensuring they are cohesive and loosely coupled.

Is this skill restricted to a specific programming language?

While the provided examples use Python and FastAPI, the underlying architectural principles and directory structures are language-agnostic and can be applied to Java, Go, Node.js, and more.

Backend Architecture Patterns

Name: Backend Architecture Patterns
Author: amurata

byamurata

•

API開発

Implements robust backend structures using Clean Architecture, Hexagonal Architecture, and Domain-Driven Design principles.

概要

This skill empowers Claude with specialized knowledge to design and implement sophisticated backend systems using industry-standard architectural patterns. By applying Clean Architecture, Hexagonal Architecture (Ports and Adapters), and Domain-Driven Design (DDD), it helps developers build decoupled, testable, and maintainable codebases. Whether bootstrapping a new microservice, refactoring a legacy monolith, or establishing enterprise-grade team standards, this skill guides the creation of proper directory structures, dependency flows, and domain-centric logic to ensure long-term system scalability and technology independence.

主な機能

Scaffolds Clean Architecture directory structures and dependency flows
Applies DDD tactical patterns including Entities, Value Objects, and Aggregates
Generates framework-independent business logic and use cases
Provides implementation patterns for decoupled database and external service integration
3 GitHub stars
Implements Hexagonal Architecture Ports and Adapters for technology-agnostic cores

ユースケース

Refactoring tightly coupled monolithic applications into maintainable, layered systems
Designing new microservices with clear domain boundaries and testable business logic
Establishing standardized architectural patterns and ubiquitous language across engineering teams

概要

主な機能

Scaffolds Clean Architecture directory structures and dependency flows
Applies DDD tactical patterns including Entities, Value Objects, and Aggregates
Generates framework-independent business logic and use cases
Provides implementation patterns for decoupled database and external service integration
3 GitHub stars
Implements Hexagonal Architecture Ports and Adapters for technology-agnostic cores

ユースケース

Refactoring tightly coupled monolithic applications into maintainable, layered systems
Designing new microservices with clear domain boundaries and testable business logic
Establishing standardized architectural patterns and ubiquitous language across engineering teams