To override this page, create a templates directory in your working directory, and create a template named "index.html".
The javascript that makes this module work can be found at the URL https://chrisnorman7.github.io/mindspace.js/mindspace.js.
Create your own javascript, instantiate Mindspace, and add your commands.
For an example, see this link.
To get the socket URL for this instance, use /socketurl.js.