vercel-sandbox

name	vercel-sandbox
description	Vercel Sandbox guidance — ephemeral Firecracker microVMs for running untrusted code safely. Supports AI agents, code generation, and experimentation. Use when executing user-generated or AI-generated code in isolation.
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Browser Automation with Vercel Sandbox

Run agent-browser + headless Chrome inside ephemeral Vercel Sandbox microVMs. A Linux VM spins up on demand, executes browser commands, and shuts down. Works with any Vercel-deployed framework (Next.js, SvelteKit, Nuxt, Remix, Astro, etc.).

Dependencies

pnpm add @vercel/sandbox

The sandbox VM needs system dependencies for Chromium plus agent-browser itself. Use sandbox snapshots (below) to pre-install everything for sub-second startup.

Core Pattern

import { Sandbox } from "@vercel/sandbox";

// System libraries required by Chromium on the sandbox VM (Amazon Linux / dnf)
const CHROMIUM_SYSTEM_DEPS = [
  "nss", "nspr", "libxkbcommon", "atk", "at-spi2-atk", "at-spi2-core",
  "libXcomposite", "libXdamage", "libXrandr", "libXfixes", "libXcursor",
  "libXi", "libXtst", "libXScrnSaver", "libXext", "mesa-libgbm", "libdrm",
  "mesa-libGL", "mesa-libEGL", "cups-libs", "alsa-lib", "pango", "cairo",
  "gtk3", "dbus-libs",
];

function getSandboxCredentials() {
  if (
    process.env.VERCEL_TOKEN &&
    process.env.VERCEL_TEAM_ID &&
    process..
  ) {
     {
      : process..,
      : process..,
      : process..,
    };
  }
   {};
}

  withBrowser<T>(
  :  <T>,
): <T> {
   snapshotId = process..;
   credentials = ();

   sandbox = snapshotId
    ?  .({
        ...credentials,
        : { : , snapshotId },
        : ,
      })
    :  .({ ...credentials, : , :  });

   (!snapshotId) {
     sandbox.(, [
      ,
      ,
    ]);
     sandbox.(, [, , ]);
     sandbox.(, [, ]);
  }

   {
      (sandbox);
  }  {
     sandbox.();
  }
}