API automated Documentation

Hello Folks,

I was going through our beloved Searchmachine Google -- but found no solid answer to this.

We have a pretty big API with multiple channels where the Requests are coming from. I'm searching for a simple to use Documentation, cause like the most developers we don't have the time to spend it for it...

At the Moment we using the "automated" Documentation from Postman and testing around with apiDoc.

Still, there has to be a Documentation Tool out there which can generate them like apiDoc. But instead of using Groups and Responses in the comments, it's grabbing them by itself from the Route-Groups and the return Resource Files.