Hi, 

I never tested myself, but in Python, there is pdfkit library.

Maybe the support of Python with IRIS could be useful for your case.

Haha Thank you @Guillaume Rongier 

Roughly 2 years ago I worked on a client generator for specification 2.0 because the server-side generator (^%REST) support 2.0 only.
I was expecting a support V 3.0 for ^%REST, but I wasn't sure InterSystems had planned this development.

So, I decided to develop a "Suite" with client, production and REST server generator for version 3.

Thank you for your praise about UI, to be honest, today, it's just a simple CSP using Bootstrap , I would like to develop a more advanced interface using Angular, but not possible for the contest timing.  I have a few ideas, but that will come later.

Thank you @Timothy Leavitt !