Unlike FastAPI, Gin does not have OpenAPI integration built in. With FastAPI when you add a route, documentation is already generated. With Gin, this is not the case. But recently I integrated Swagger UI in one of my Go backends and I wanted to document that process.

Go community believes that we need no framework to develop web services. And I totally agree with that. When you work without using any framework, you actually learn the ins and outs of development. But once you learn how things work, you must reside in a community and don't reinvent the wheel.