Swashbuckle.AspNetCore is a Swagger and OpenAPI tooling library that generates interactive API documentation directly from ASP.NET Core application code.
The tool solves the problem of keeping API documentation synchronized with implementation by automatically generating OpenAPI documents from your code. It embeds the swagger-ui project to provide an interactive interface where developers can explore and test API operations without manual documentation maintenance. The generated OpenAPI documents also unlock access to the broader ecosystem of OpenAPI-based tools, including client code generators for multiple platforms.
Teams building ASP.NET Core APIs should adopt this tool if they want living documentation that stays current with code changes and requires minimal ongoing effort. The embedded swagger-ui provides an out-of-the-box exploration interface, and support for OpenAPI 3.1, 3.0, and Swagger 2.0 means it can target different specification versions depending on your needs. The tool works with ASP.NET Core 8.0 and later, with some versions supporting earlier releases.
The project maintains active development with regular updates to track changes in its dependencies, particularly Microsoft.OpenApi and swagger-ui. Breaking changes are introduced when necessary to support new specification versions, with migration guidance provided for affected users. The tool integrates closely with the OpenAPI ecosystem and responds to shifts in that landscape.
