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Notifications when the assistant begins and ends internal reasoning. Subscribe for insight into the assistant’s thought process.

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NOTIFICATION_AGENT_THINKING_STARTED

Agent began internal processing. 
{
  "type": "NOTIFICATION_AGENT_THINKING_STARTED",
  "eventId": "evt_1",
  "threadId": "thread_456",
  "requestId": "req_1",
  "eventMessage": {
    "agent": null,
    "content": "agent began internal processing",
    "collaborationId": null,
    "activeAssistantCollaborationRequired": null,
    "toolExecutionApprovalRequest": null,
    "timestamp": "2025-08-12T00:00:00"
  }
}

​
NOTIFICATION_AGENT_THINKING_COMPLETE

Agent finished internal processing. 
{
  "type": "NOTIFICATION_AGENT_THINKING_COMPLETE",
  "eventId": "evt_1",
  "threadId": "thread_456",
  "requestId": "req_1",
  "eventMessage": {
    "agent": null,
    "content": "agent finished internal processing",
    "collaborationId": null,
    "activeAssistantCollaborationRequired": null,
    "toolExecutionApprovalRequest": null,
    "timestamp": "2025-08-12T00:00:00"
  }
}
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