Do you mean https://varlink.org/Interface-Definition https://varlink.org/Interface-Definition? JSON is just the marshaling format. All the language bindings don

Do you mean https://varlink.org/Interface-Definition https://varlink.org/Interface-Definition? JSON is just the marshaling format. All the language bindings don't need a fancy parser outside of json.loads. I wish the interface definitions themselves had been specified in JSON as well. Peep the Python interface parser: https://github.com/varlink/python/blob/master/varlink/scanner.py https://github.com/varlink/python/blob/master/varlink/scanne.... This is the quality you can expect for an ad-hoc format, which is to say, pretty bad. Making the hardest part farming out to a parsing library you already have and is a built-in in your language is a no-brainer choice.