STALE_GENERATION

The call named a lease generation or control epoch that is no longer current.

Checked 2026-09-28

The call named a lease generation or control epoch that is no longer current.

HTTP 409 · gRPC ABORTED · the error body

#Returned by

Method	Scope	What it does
`sandboxes.leases.exec`	`sandboxes:exec`	Runs one command in the lease to completion and returns its output, capped at 1 MiB per stream. With `idempotency_key` the command is dispatched at most once per lease and key, and its recorded result is returned again, also after the lease ended. Long-running or interactive processes use the guest protocol at `status.endpoints.guest_uri`.
`sandboxes.leases.act`	`sandboxes:exec`	Performs computer actions on a DESKTOP, BROWSER, or ANDROID lease, in order, and returns each action's result and, when `screenshot` is set, the screenshot taken after the last action. The actions are the Anthropic computer tool's and OpenAI computer use's, one-to-one. Refused CONTROL_HELD_BY_HUMAN while a human holds control.
`sandboxes.leases.release_control`	`sandboxes:exec`	Releases control held under `epoch`; its controller tokens stop working.

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