@MartinJaniczek Yeah, I thought that wasn't a built-in option. But obviously, it could be made so. In fact, one should probably be able to give any of the options to
⎕JSON
to tweak functionality. E.g. to make it use JSON5 or return non-compact JSON. I'll pass your request forward. Also, have you tried using
Jarvis? It is JSONServer's successor and is actively maintained.