If that's what you mean, then no. I do have plans to work on this in the future, but I am not sure when I'll get the time for that.
Or do you mean just generating a diagram and posting it to Schemio programatically? This is possible, but it's not documented.
All diagrams are stored in JSON by the way and the structure is quite straightforward, so it shouldn't be too difficult to generate it yourself
If you go to edit mode and select the "Ball" object (in the top hiearchy), then go to behavior panel, you will find that it has a "script" action in the "Play" event. You can take a look at how I implemented that scene and perhaps get some insights for yourself.
Also I had a small section about SchemioScript in this article: https://medium.com/@ivan.ishubin/interactive-diagrams-for-co...
I use it when I need to build complex templates or interactive learning demonstrations like on Brilliant. For example a friend of mine is preparing similar interactive demos with Schemio for kids at school.
Another thing that Schemio has is the concept of classes, functions and arguments bindings. Unfortunately I did not have a chance to write an article or prepare a video for this. But the idea is that you can prepare a class, with complex behavior and even its own configurable arguments, and then you can select any object on the scene and specify that it uses that class. Again, I don't know your exact situation, but just laying out the options
If you want open source alternatives, I remembered seeing now a little while ago this https://blog.eowyn.net/netlistsvg/ but never tried it myself, you might give it a go.