CONTROL_HELD_BY_HUMAN

A human has taken over the display; agent input and screenshots are refused until control is released or expires.

Checked 2026-09-28

A human has taken over the display; agent input and screenshots are refused until control is released or expires.

HTTP 409 · gRPC FAILED_PRECONDITION · the error body

#Returned by

Method	Scope	What it does
`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.acquire_control`	`sandboxes:exec`	Takes exclusive input control of a lease's display. A HUMAN acquire preempts an AGENT holder and returns a controller stream; an AGENT acquire is refused CONTROL_HELD_BY_HUMAN while a human holds control. Control lapses at `ttl`, which the platform caps at 30 minutes.

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