i'm a newbie, so it might be a stupid question, does the tool support gdevelop?
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If it supports JSON data importing, it should.
I'd be delighted to check in on GDevelop and see if that's possible sometime next month. If it works, I will consider having a downloadable example. I need more samples than the Godot one anyways to show it can be used in a variety of engines or frameworks.
It would appear based on the documentation for GDevelop that it has an extension that supports JSON data importing:
https://wiki.gdevelop.io/gdevelop5/extensions/jsonresource-loader
Instructions on how to install an extension are here: https://wiki.gdevelop.io/gdevelop5/extensions/search/
That should help get you get started before I can make a sample project.