got one in typescript? or node.js with javascript?
all with the same zero 3rd party dependencies approach
also want to do clojure, unfortunately it looks like java does not come with json support out of the box
Clojure has clojure.data.json (https://clojure.github.io/data.json/), should be easy to use albeit not blazing fast exactly, doesn't really matter here though. Otherwise, you could use Babashka, comes with Cheshire (and others) out of the box.
I like the babashka angle!
but the runtimes are everywhere
and a smol agent /w no 3rd party dependencies is probably a good option to have in a pinch