To me, most of these things are (well look) too dynamic; I like prototyping in clojure where I can write vomit to try things out fast, but when it has been done and dusted, I want to cast it in concrete and steel, which includes statically typed query/body params. It is vital to how we work because any changes there would probably mean something is very wrong (malicious most likely).

I never really drank the clojure (which I really like by the way and, like said, I use for prototyping/spelunking) creator koolaid that web apis are changing all the time so you need to be flexible. This, in practice, with companies that don’t fall over tomorrow, doesn’t happen that often.