Swagger is a toolset for describing, documenting, and interacting with HTTP APIs. The related OpenAPI specification defines a language-agnostic, human-readable contract that lets clients understand and use endpoints without reading server source code. In ASP.NET Core, Swashbuckle supplies services, middleware, attributes, and filters for generating and customizing this documentation. section 3.2.1 section 11.5
Useful Swagger documentation should make an API practical for its different developer audiences by:
- Describing endpoints, input parameters, responses, and representative requests and responses. section 11.5
- Grouping related endpoints, emphasizing authorization requirements, and customizing the documentation context. section 11.5
- Using Swashbuckle’s attributes and filter pipeline to improve operation descriptions and add custom key/value data to generated JSON schemas. section 11.5
Verify documented API operations
Use Swagger UI to execute newly created gRPC wrapper operations and confirm that they work. Treat authorization as part of the verification: update methods must be accessible only to users with the Moderator role. section 10.5.5
Swagger/OpenAPI is especially useful when an API has no user interface to reveal its capabilities. Its generated documentation gives human readers and parsers a discoverable view of the interface, while remaining connected to REST concerns such as a uniform interface, HATEOAS, and API versioning. section 3.5 section 3.2.1
