Not sure what you mean. I use the above linked personal project, bhatti, which internally uses Firecracker microVMs.

Ah, for some reason I didn't make the connection between your VM setup and your agent sandbox setup and thought those were two separate things. Sorry about that!

No worries! I too have been using machines/sandboxes/VMs/microVMs very interchangeably these days. Former is understood by a broader group, but latter is more precise. Trying to find a balance.