Legitimately very cool. As someone else mentioned I’d also really like the ability to embed these on another page, and possibly have these run locally offline.

I do have a question: for notebooks linking to outside notebooks: is there anything that prevents breakages? Ie external notebook variable name changes or is completely removed, would parts of my notebook relying on that one then also fail? Is there some kind of public versioning of notebooks so that I can refer to a value at notebook ref,v1?