feat(vercel-sandbox): support onResume parameter in Sandbox.get and Sandbox.create

[marc-vercel]

Non-breaking change. Three new integration tests have been added to ensure that the communication between SDK <-> API works properly with the new field.

Support a new parameter, onResume, for Sandbox.get() and Sandbox.create(). This new parameter is a hook with this format:

onResume: (sandbox: Sandbox) => Promise<void>

This hook will only be executed when a new session is created as part of the resume. So, for example, if I run the following code the onResume hook is not going to be called because we are not creating a new session (it is a no-op):

const sandbox = await Sandbox.create();
await Sandbox.get({ name: sandbox.name, resume: true, onResume: (() => {/* Logic here */}) });

But in this case, it will be called:

const sandbox = await Sandbox.create(onResume: (() => {/* Logic here */}) });
await sandbox.stop({ blocking: true });

// The sandbox is stopped and we need to create a new session. `onResume` hook will be called.
await sandbox.runCommand({ ... });

[vercel]

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Project	Deployment	Actions	Updated (UTC)
sandbox	Ready	Preview, Comment, Open in v0	Apr 9, 2026 9:17am
sandbox-sdk	Ready	Preview, Comment, Open in v0	Apr 9, 2026 9:17am
sandbox-sdk-ai-example	Ready	Preview, Comment, Open in v0	Apr 9, 2026 9:17am