{
  "type": "object",
  "description": "An event in the agent task lifecycle (for SSE streaming).",
  "required": [
    "id",
    "task_id",
    "event_type",
    "payload",
    "created_at"
  ],
  "properties": {
    "created_at": {
      "type": "string",
      "format": "date-time"
    },
    "event_type": {
      "type": "string"
    },
    "id": {
      "type": "string",
      "format": "uuid"
    },
    "payload": {},
    "task_id": {
      "type": "string",
      "format": "uuid"
    }
  }
}