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Vercel Sandbox

Lightweight microVM execution layer for AI agent code sandboxing

open sourceupdated Jul 14, 2026

Vercel Sandbox provides a lightweight microVM execution environment for running untrusted code generated by AI agents safely. It creates isolated sandboxes that prevent generated code from accessing the host system, network, or other processes. Designed for AI coding platforms that need to execute user or agent-generated code without security risks to the host infrastructure.

Vercel Sandbox addresses the growing need for safe code execution environments as AI agents generate and run code autonomously. When an AI coding agent produces a code snippet, that code needs to execute in an environment where it cannot access sensitive host resources, exfiltrate data, or affect other running processes. Vercel Sandbox provides lightweight microVMs that isolate code execution while maintaining fast startup times suitable for interactive development workflows.

The sandbox creates ephemeral execution environments that are destroyed after each use, preventing state leakage between sessions. Resource limits on CPU, memory, and execution time prevent runaway processes from consuming host resources. Network isolation controls whether sandboxed code can make outbound connections, preventing data exfiltration. File system isolation restricts access to only the files needed for execution.

The project reflects Vercel's investment in the infrastructure needed for AI-powered development platforms where code generation and execution happen in tight feedback loops. By providing sandboxing as a reusable component, it enables other AI platforms to implement safe code execution without building isolation infrastructure from scratch. The lightweight microVM approach balances security isolation with the fast startup times that interactive AI coding experiences require.

Pricing

Free and open-source

Platforms

Linux, microVM isolation, Docker compatible

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FAQ

What is Vercel Sandbox?

Vercel Sandbox provides a lightweight microVM execution environment for running untrusted code generated by AI agents safely. It creates isolated sandboxes that prevent generated code from accessing the host system, network, or other processes. Designed for AI coding platforms that need to execute user or agent-generated code without security risks to the host infrastructure.

Is Vercel Sandbox free?

Yes — Vercel Sandbox is open source and free to use. Free and open-source

Is Vercel Sandbox open source?

Yes — Vercel Sandbox is open source.

What are the best Vercel Sandbox alternatives?

The top editor-verified Vercel Sandbox alternatives are gVisor, WebContainers.