Zeroboot VM Sandbox Skill by ara.so — Daily 2026 Skills collection. Zeroboot provides sub-millisecond KVM virtual machine sandboxes for AI agents using copy-on-write forking. Each sandbox is a real hardware-isolated VM (via Firecracker + KVM), not a container. A template VM is snapshotted once, then forked in 0.8ms per execution using CoW semantics. How It Works 1. Template : Firecracker boots once, pre-loads your runtime, snapshots memory + CPU state 2. Fork ( 0.8ms) : New KVM VM maps snapshot memory as CoW, restores CPU state 3. Isolation : Each fork is a separate KVM VM with hardware-enfor…