Great to see you, Kyle! 

Yes, this was a part of the plan )) Welcome back!

On behalf of the idea: there is a fresh request of an AS2 protocol interoperability adapter.

Hope this could help:

w ##class(%ZEN.Auxiliary.jsonProvider).%WriteJSONStreamFromObject(.stream,j)

1

SAMPLES>w stream.Read()

{

"_class":"Jiri.RegisteredObject",

"p1":"test",

"p2":"json"

}

Stolen from @Kyle Baxter answer here.