Dynamically extend timeout of an active Sandbox

You can now extend the duration of a running Vercel Sandbox using the new extendTimeout method.

This lets long-running sandboxes stay active beyond their initial timeout, making it easier to support workflows like chained agentic tasks or multi-step code generation that take longer than expected.

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const sandbox = await Sandbox.create({
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  // 15 minute timeout
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  timeout: 15 * 60 * 1000,
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});
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// Extend by 10 minutes
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await sandbox.extendTimeout(10 * 60 * 1000);

You can extend the timeout multiple times until the maximum runtime for your plan is reached.

Pro and Enterprise plans support up to 5 hours, with the Hobby plan supporting up to 45 minutes.

Get started with Sandbox now and learn more in the docs.