[
  {
    "type": "response.output_item.done",
    "item": {
      "type": "custom_tool_call",
      "name": "apply_patch",
      "input": "*** Begin Patch\n*** Add File: test.md\n+Hello world\n*** End Patch",
      "call_id": "__ID__"
    }
  },
  {
    "type": "response.completed",
    "response": {
      "id": "__ID__",
      "usage": {
        "input_tokens": 0,
        "input_tokens_details": null,
        "output_tokens": 0,
        "output_tokens_details": null,
        "total_tokens": 0
      },
      "output": []
    }
  }
]