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aspnet-minimal-api-openapi skill

by github·github/awesome-copilot·39k stars·MIT

Create ASP.NET Minimal API endpoints with proper OpenAPI documentation

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Install the aspnet-minimal-api-openapi skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description. 

git clone --depth 1 https://github.com/github/awesome-copilot.git /tmp/awesome-copilot
mkdir -p ~/.claude/skills
cp -r /tmp/awesome-copilot/skills/aspnet-minimal-api-openapi ~/.claude/skills/aspnet-minimal-api-openapi
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

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 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

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