I like the idea. My feedback: the name seems like it's going to confuse people. I almost skipped by this post when I saw the name at a glance because I'm not particularly interested in 3D graphics.
Agreed! This name is poorly chosen. Most people have a general familiarity with what raycasting is about and will likely be confused by this usage.
As to why exactly we picked it: as ray casting is a way to instantly query information about closest objects, we thought it would be a good metaphor for instantly querying and accessing different third party services. Rays represent speed and focus.