@f6217321 Here is a gist that tests the presence of JSON functions: https://gist.github.com/groue/046ebddb4a410304094c022d756081c8 Unexpected results are reported as XCTest failures. I hope it will be handy for you! 

 @8c08de26 wow 👍thanks for that. Will package it, with a nice icon 😉, and run it on all our instances.