curl --request GET \
  --url https://api.sixtyfour.ai/search/deep-search-status/{task_id}

{
  "task_id": "<string>",
  "status": "<string>",
  "start_time": "<string>",
  "current_phase": 123,
  "progress_message": "<string>",
  "close_time": "<string>",
  "resource_handle_id": "<string>",
  "total_results": 123,
  "exported_count": 123,
  "error": "<string>",
  "search_id": "<string>",
  "iterations": [
    {}
  ]
}