SKILL.md
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 mmap(MAP_PRIVATE) CoW semantics.
How It Works
Firecracker snapshot ──► mmap(MAP_PRIVATE) ──► KVM VM + restored CPU state
(copy-on-write) (~0.8ms)
- Template: Firecracker boots once, pre-loads your runtime, snapshots memory + CPU state
- Fork (~0.8ms): New KVM VM maps snapshot memory as CoW, restores CPU state
- Isolation: Each fork is a separate KVM VM with hardware-enforced memory isolation
Installation
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 mmap(MAP_PRIVATE) CoW semantics.
How It Works
Firecracker snapshot ──► mmap(MAP_PRIVATE) ──► KVM VM + restored CPU state
(copy-on-write) (~0.8ms)
- Template: Firecracker boots once, pre-loads your runtime, snapshots memory + CPU state
- Fork (~0.8ms): New KVM VM maps snapshot memory as CoW, restores CPU state
- Isolation: Each fork is a separate KVM VM with hardware-enforced memory isolation