Swashbuckle is an open-source library for .NET that provides a simple and easy-to-use API for generating Swagger (OpenAPI) documentation for web APIs. It automatically generates a Swagger specification for your API based on your existing .NET code, and provides a set of tools for customizing and displaying the documentation in a user-friendly format. It can be easily integrated into an ASP.NET Core web application and has a built-in web UI for developers and users to interact with the API and test its functionality. It also supports some of the advanced features like Authentication, Authorization, and more.
To learn more, visit the following resources: