# Firecracker

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- Skill: `demerzels-lab/firecracker` (Agent Skill, multi-file: 5 files)
- Install (CLI): `npx skillmds@latest add demerzels-lab/firecracker`
- Raw SKILL.md: https://api.skillmd.com/api/skills/demerzels-lab/firecracker/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: Demerzels-lab (https://skillmd.com/u/demerzels-lab)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/demerzels-lab/firecracker

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name: firecracker
description: Use Firecracker microVM CLI to create, manage, and run secure, fast-booting (~125ms) virtual machines for isolated tasks, sandboxing untrusted code, ephemeral dev envs, agent isolation, reproducible testbeds, and air-gapped deps. Use for: risky exec/sessions_spawn in VMs, multi-model runs, Docker alternative on RPi/arm64. Supports API sock control, config JSON, kernel/rootfs mgmt. First read this SKILL.md, then scripts/download.sh (setup), scripts/quick-vm.sh (usage), references/api.md (advanced).