A feature should be added that exposes, preferably, an HTTP endpoint from where the current runtime execution state can be inspected. I'm thinking about using d3.js: https://docs.stardog.com/tutorials/data-visualization-with-d3.

Something that looks like:

The visualization should show the current state:

• which state machines are instantiated,
• in which states they are,
• the data values in the local context,
• services being invoked.

It is required that this feature can be enabled (it should be disabled by default) using an environment variable. The implementation cannot be too large (not too much content should be included in the runtime image).