Does this skill support DTOs?

Yes, it provides patterns for separating Request and Response DTOs to ensure that internal domain models are never exposed directly to the API client.

Can I use this for existing projects?

Absolutely. The skill is designed to help refactor existing 'fat' controllers into standardized, modern ASP.NET Core patterns to improve maintainability.

What is the Thin Controller pattern?

It is a design practice where controllers only handle HTTP concerns—such as routing and parameter binding—while delegating all business logic to dedicated service layers.

How does it handle API validation?

It utilizes Data Annotations on DTOs and the [ApiController] attribute to automate model state validation, ensuring invalid requests return 400 Bad Request responses automatically.

What routing conventions does it follow?

It promotes RESTful standards including plural nouns for resources, kebab-case for multi-word paths, and explicit attribute routing for clear endpoint definitions.

ASP.NET Core Controller Patterns

Name: ASP.NET Core Controller Patterns
Author: Joshua-Palamuttam

byJoshua-Palamuttam

0•

API Development

Implements standardized ASP.NET Core controller patterns to ensure clean, maintainable, and type-safe API endpoints.

This skill provides domain-specific guidance for building modern C# ASP.NET Core Web APIs using the Thin Controller pattern. It enforces strict separation of concerns by delegating business logic to services, optimizes routing with standardized resource naming, and ensures robust error handling through proper HTTP status codes and DTO-based data transfer. It is particularly useful for developers looking to maintain consistent architecture across large-scale backend projects while leveraging automatic validation and type-safe response handling.

Key Features

01Standardizes RESTful routing and kebab-case resource naming conventions

02Supports type-safe ActionResult implementations for better API contracts

03Provides templates for explicit DTO-based request and response handling

04Enforces the Thin Controller pattern for cleaner logic separation

050 GitHub stars

06Implements automatic model validation and HTTP status code mapping

Use Cases

01Architecting a new ASP.NET Core Web API from scratch with best practices

02Conducting code reviews to ensure consistency in API routing and parameter binding

03Refactoring 'fat' controllers into maintainable, service-oriented structures

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add joshua-palamuttam/claude-code-presentation controller-patterns

For use in Claude.ai and ChatGPT

Download Skill