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vercel-sandbox

Execute untrusted code in ephemeral Firecracker microVMs with network policy enforcement.

2|Updated Mar 29, 2026
Search Tags:#security#isolation#execution#sandbox#firecracker#microvm
One-click install
npx skills add https://github.com/NagyVikt/codex-plugins --skill vercel-sandbox-nagyvikt
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: vercel-sandbox
Source: https://github.com/NagyVikt/codex-plugins/tree/main/plugins/vercel/skills/vercel-sandbox
Command: npx skills add https://github.com/NagyVikt/codex-plugins --skill vercel-sandbox-nagyvikt

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill solves the security risk of running user-generated or AI-generated code by providing a fully isolated, ephemeral Firecracker microVM environment.

Core Features & Use Cases

  • Isolated Execution: Run untrusted code in a secure, sandboxed environment with controlled network access.
  • Snapshotting: Capture and resume VM states to optimize performance for repetitive tasks.
  • Use Case: An AI agent needs to execute a user-provided Python script to process data; this Skill ensures the script runs in a restricted environment without access to the host system or sensitive credentials.

Quick Start

Use the vercel-sandbox skill to create a new node24 environment and execute the provided code snippet safely.

Frequently Asked Questions about vercel-sandbox

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I execute AI-generated code securely without risking the host system?▼

Secure execution of AI-generated code is achieved by running it inside ephemeral Firecracker microVMs. This sandboxed environment enforces granular network policies, ensuring untrusted scripts process data without accessing sensitive host credentials or system resources.

Can I run Node.js and Python scripts in an isolated sandbox environment?▼

Yes, you can run Node.js and Python scripts in an isolated sandbox. The environment supports multi-runtime execution, allowing you to safely process untrusted code across different programming languages within the ephemeral microVM.

What is the best way to capture and resume microVM states for repetitive tasks?▼

The best way to capture and resume microVM states is through snapshotting capabilities. This feature allows you to save a VM state and resume it later, optimizing performance for repetitive isolated code execution workflows.

Does Firecracker microVM support network policy enforcement for untrusted code?▼

Yes, Firecracker microVM supports granular network policy enforcement for untrusted code. This ensures that AI-generated scripts run in a restricted environment with controlled network access during ephemeral execution.

When do I need ephemeral compute workflows for isolated code runners?▼

You need ephemeral compute workflows when running untrusted or AI-generated code that requires strict isolation. This approach provides a temporary, secure sandbox that prevents unauthorized access to the host system.

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