How does this skill handle exceptions in .NET 8?

It uses the modern IExceptionHandler interface combined with AddProblemDetails to capture unhandled exceptions and format them as RFC 9457 compliant JSON responses.

Which middleware implementation approach is recommended?

The IMiddleware interface is generally recommended for modern applications because it provides strong typing and better support for Dependency Injection (DI) compared to convention-based approaches.

Why is middleware ordering important?

Middleware executes in the order it is registered. For example, Exception Handling must be placed early in the pipeline to catch errors from subsequent stages like Routing or Authentication.

Can I use this for security checks?

Yes, the skill includes patterns for 'short-circuiting' the middleware pipeline, which is ideal for validating API keys or headers before the request reaches your business logic.

ASP.NET Core Middleware & Exception Handling

Name: ASP.NET Core Middleware & Exception Handling
Author: andychang0121

byandychang0121

0•

API開発

Implements custom ASP.NET Core middleware and standardized global exception handling using modern .NET 8+ patterns.

This skill provides comprehensive guidance for architecting the ASP.NET Core request pipeline through professional middleware implementation. It covers three distinct patterns—interface-based IMiddleware, convention-based classes, and lightweight lambdas—allowing developers to choose the right approach for cross-cutting concerns. Furthermore, it establishes a robust global exception handling strategy using the .NET 8+ IExceptionHandler interface and the RFC 9457 ProblemDetails standard, ensuring that all API errors are returned in a consistent, machine-readable format while preventing sensitive data leaks.

主な機能

01Implements .NET 8+ IExceptionHandler for centralized error management

02Guides correct middleware pipeline ordering for performance and reliability

03Provides logic for request short-circuiting and security validation

040 GitHub stars

05Standardizes API error responses using the RFC 9457 ProblemDetails format

06Supports IMiddleware, Convention-based, and Lambda middleware patterns

ユースケース

01Implementing uniform logging, request timing, and correlation IDs across all API endpoints

02Creating custom API Key validation or authentication filters that stop invalid requests early

03Centralizing try-catch logic into a single handler to provide consistent 4xx and 5xx responses

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add andychang0121/dotnet-skills aspnetcore-middleware

For use in Claude.ai and ChatGPT

主な機能

01Implements .NET 8+ IExceptionHandler for centralized error management

02Guides correct middleware pipeline ordering for performance and reliability

03Provides logic for request short-circuiting and security validation

040 GitHub stars

05Standardizes API error responses using the RFC 9457 ProblemDetails format

06Supports IMiddleware, Convention-based, and Lambda middleware patterns

ユースケース

01Implementing uniform logging, request timing, and correlation IDs across all API endpoints

02Creating custom API Key validation or authentication filters that stop invalid requests early

03Centralizing try-catch logic into a single handler to provide consistent 4xx and 5xx responses