Package for generating API Documentation

I think Swagger can likely do what you want but nobody has integrated ir with Codeigniter 4. I see someone did some Codeigniter 3 integration many years ago.

Yes, Swagger can be used to achieve this but it is done separately and I have to describe the API schema and each path's request and response. It has no idea about my code. I am looking for something if possible generate the OpenAPI definitions as described in the Code that way when my code changes the API Doc Schema also changes.

Kindly send me a link to the CI3 integration you saw.