At exe.dev, we use integrations to connect your VMs to other services securely and simply. Usually this takes the form of a proxy that injects secrets.
We love hearing from our customers (hint, hint, email us, don’t be shy), and one of them was doing significant gymnastics to share skills across their VMs. Nothing wrong with that (rsync is right there, after all), but we realized we could use the same integrations machinery we already have to share skills files as well. You register a skill once, and attach it to any VMs that you want to see it. Shelly uses the “reflection” integration to see if there are any skills integrations, and, if so, surfaces them.