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The agent stopped, with full stop semantics beyond PromptResult.stopReason.

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Properties

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string & object | AgentStopCause
required
Type: AgentStopCause
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null | string
Optional error message (populated when cause is Error or QuotaExhausted).
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"_cognition.ai/agent_stopped"
required
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string
required
ACP session ID that owns this stop event.
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null | TurnStats
Type: TurnStatsPopulated on successful completion.