Installation

Install with CLI Recommended 
gh skills-hub install aspnet-minimal-api-openapi

Don't have the extension? Run gh extension install samueltauil/skills-hub first.

Download and extract to your repository:

.github/skills/aspnet-minimal-api-openapi/

Extract the ZIP to .github/skills/ in your repo. The folder name must match aspnet-minimal-api-openapi for Copilot to auto-discover it.

Skill Files (1)

SKILL.md 1.7 KB 
---
name: aspnet-minimal-api-openapi
description: 'Create ASP.NET Minimal API endpoints with proper OpenAPI documentation'
---

# ASP.NET Minimal API with OpenAPI

Your goal is to help me create well-structured ASP.NET Minimal API endpoints with correct types and comprehensive OpenAPI/Swagger documentation.

## API Organization

- Group related endpoints using `MapGroup()` extension
- Use endpoint filters for cross-cutting concerns
- Structure larger APIs with separate endpoint classes
- Consider using a feature-based folder structure for complex APIs

## Request and Response Types

- Define explicit request and response DTOs/models
- Create clear model classes with proper validation attributes
- Use record types for immutable request/response objects
- Use meaningful property names that align with API design standards
- Apply `[Required]` and other validation attributes to enforce constraints
- Use the ProblemDetailsService and StatusCodePages to get standard error responses

## Type Handling

- Use strongly-typed route parameters with explicit type binding
- Use `Results<T1, T2>` to represent multiple response types
- Return `TypedResults` instead of `Results` for strongly-typed responses
- Leverage C# 10+ features like nullable annotations and init-only properties

## OpenAPI Documentation

- Use the built-in OpenAPI document support added in .NET 9
- Define operation summary and description
- Add operationIds using the `WithName` extension method
- Add descriptions to properties and parameters with `[Description()]`
- Set proper content types for requests and responses
- Use document transformers to add elements like servers, tags, and security schemes
- Use schema transformers to apply customizations to OpenAPI schemas

License (MIT)

MIT Source: github/awesome-copilot
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MIT License

Copyright GitHub, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.