How does Eddie AI trigger clip viewer overlay text in the Me

I'm trying to replicate the overlay effect used by Eddie AI in DaVinci Resolve.
When hovering over clips in the Media Pool, their viewer shows a floating overlay containing a full-sentence description — like: "The video shows a parking lot filled with various cars under the shade of tall trees..."

Here’s an example of the overlay I’m trying to replicate: https://postimg.cc/JD4N5cv5

I've tried scripting in both Lua and Python using:
SetMetadata("Comments")
SetMetadata("Description")
SetClipProperty("Clip Name", ...)

These update visible metadata correctly and allow for Smart Bins, markers, etc., but none of them populate the overlay in the viewer when hovering over a clip.

So my question is:
Which property or API field controls the hover overlay text shown in the Media Pool viewer?
Is this something only the Studio SDK can access? Or is there a hidden metadata tag exposed through scripting?

Thanks in advance for any help — I’d love to reproduce this workflow for scripted clip annotation.

That type of overlay is shown in the viewer when there is a marker with notes on the clip. Specifically in this case it is a marker with a duration, meaning it's a range as opposed to a point in time.