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net8-apirest-validations

Configure automatic FluentValidation validation for ASP.NET Core 8 REST APIs.

Updated Mar 25, 2026
Search Tags:#validation#middleware#aspnetcore#rest-api#dependency-injection#fluentvalidation#dto-validation
One-click install
npx skills add https://github.com/zeshone/zesh-one-skills --skill net8-apirest-validations
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: net8-apirest-validations
Source: https://github.com/zeshone/zesh-one-skills/tree/main/skills/backend/validations
Command: npx skills add https://github.com/zeshone/zesh-one-skills --skill net8-apirest-validations

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Provides a structured approach to validating input in ASP.NET Core 8 REST APIs using FluentValidation, clarifying validator placement, integration with the pipeline, and when to rely on FluentValidation versus manual validation.

Core Features & Use Cases

  • Auto-registration and automatic validation in ASP.NET Core 8 projects using FluentValidation.
  • Guidance on when to use FluentValidation validators vs. business logic validation in services.
  • Hybrid validation patterns for file upload (D-30) and other common HTTP input scenarios.

Quick Start

Configure FluentValidation auto-validation in your ASP.NET Core 8 app and register validators from the executing assembly.

Frequently Asked Questions about net8-apirest-validations

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I configure automatic validation in an ASP.NET Core 8 REST API?▼

FluentValidation provides structured DTO validation for ASP.NET Core 8 REST APIs by auto-registering validators from the executing assembly, ensuring robust input validation across request DTOs without manual checks.

How do I set up FluentValidation auto-registration for ASP.NET Core request DTOs?▼

Install the FluentValidation core, ASP.NET Core integration, and DI extension packages to auto-register validators from the executing assembly, enabling automatic validation of request DTOs across the ASP.NET Core pipeline.

When should I use FluentValidation versus manual validation in ASP.NET Core?▼

Use FluentValidation for structured DTO input validation, while relying on manual validation within services for complex business logic, enabling hybrid validation patterns for scenarios like file uploads.

Does FluentValidation work with dependency injection in ASP.NET Core 8?▼

Yes, FluentValidation works with ASP.NET Core 8 dependency injection by leveraging DI extensions to auto-register validators from the application assembly directly into the request pipeline.

What is the best way to handle file upload validation in an ASP.NET Core REST API?▼

The best approach is a hybrid validation pattern combining FluentValidation for standard DTO properties with manual validation logic within services for complex file upload scenarios.

Why use FluentValidation for DTO validation instead of manual validation in ASP.NET Core?▼

FluentValidation separates validation logic from business entities by auto-registering validators, providing a cleaner, more maintainable structure for REST API input validation than manual validation.

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