Create a Vercel Sandbox and run a command using the JS/TS SDK (@vercel/sandbox), authenticated via Vercel OIDC token from a linked project.
domain: vercel.com · 6 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Create a project directory, run `pnpm init` (or npm/yarn/bun), then `vercel link` to connect it to a Vercel project. The project does not need deployed code; it only needs to exist so Vercel can issue OIDC tokens.
Run `vercel env pull` to write a `.env.local` file containing `VERCEL_OIDC_TOKEN`. This token expires after 12 hours; re-run `vercel env pull` if you see auth errors.
Install the SDK: `npm install @vercel/sandbox dotenv @types/node tsx typescript` (or `pnpm i @vercel/sandbox`). Docs: https://vercel.com/docs/sandbox/quickstart
In code, load env vars with `config({ path: '.env.local' })` from dotenv, import `{ Sandbox }` from `@vercel/sandbox`, then call `const sandbox = await Sandbox.create()`.
Run a command with `const result = await sandbox.runCommand('echo', ['Hello from Vercel Sandbox!'])` and read output via `await result.stdout()`; check `result.exitCode` (0 = success).
Run the script (e.g. `pnpm tsx index.ts`). Call `await sandbox.stop()` when finished to avoid running until the default 5-minute timeout.
Known gotchas
Sandboxes automatically stop after 5 minutes by default (`timeout` option, in milliseconds) unless you pass a longer `timeout` or call `sandbox.extendTimeout()`.
Sandboxes are persistent by default: on stop, the filesystem is auto-snapshotted and restored on next resume by name. This snapshot storage is billed separately (Snapshot Storage metric); pass `persistent: false` at creation (or `--non-persistent` in the CLI) for one-off ephemeral workloads.
`VERCEL_OIDC_TOKEN` expires after 12 hours in local development; long-running local scripts/CI will fail auth unless you refresh via `vercel env pull` or switch to access-token auth.
Sandbox.create() defaults: `resources.vcpus` = 2 (2048 MB RAM per vCPU), `image` = `vercel/sandbox/universal`, `networkPolicy` = `allow-all`, up to 15 exposed `ports`.
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