Dear Cafe, I am pleased to announce servant-swagger [1] and swagger2 [2] packages! Swagger [3] is a project used to describe and document RESTful APIs. Here's a servant blog post, introducing both packages: https://haskell-servant.github.io/posts/2016-02-06-servant-swagger.html servant-swagger allows you to generate a Swagger specification from your Servant API. swagger2 is a standalone package for Swagger 2.0. This package introduces lenses and generic-based derivation to minimize the effort of constructing a Swagger specification for your API. Both packages are supposed to be easy to use and have great documentation! So if you have any troubles using/understanding them — feel free to report an issue or contact me directly! Kind regards, Nick [1] http://hackage.haskell.org/package/servant-swagger [2] http://hackage.haskell.org/package/swagger2 [3] http://swagger.io