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#1message_start+12 ms

{
  "type": "message_start",
  "message": {
    "id": "msg_01Q9vXj8kB3yHn2LwT5pRz7c",
    "type": "message",
    "role": "assistant",
    "model": "claude-sonnet-4-5-20250929",
    "content": [],
    "stop_reason": null,
    "usage": {
      "input_tokens": 1824,
      "cache_read_input_tokens": 12288,
      "output_tokens": 3
    }
  }
}

#2content_block_start+398 ms

{
  "type": "content_block_start",
  "index": 0,
  "content_block": {
    "type": "text",
    "text": ""
  }
}

#3ping+398 ms

{
  "type": "ping"
}

#4content_block_delta+398 ms

{
  "type": "content_block_delta",
  "index": 0,
  "delta": {
    "type": "text_delta",
    "text": "The failing test reads the fixture"
  }
}

#5content_block_delta+951 ms

{
  "type": "content_block_delta",
  "index": 0,
  "delta": {
    "type": "text_delta",
    "text": " before it is written. Let me look at the setup."
  }
}

#6content_block_stop+951 ms

{
  "type": "content_block_stop",
  "index": 0
}

#7content_block_start+951 ms

{
  "type": "content_block_start",
  "index": 1,
  "content_block": {
    "type": "tool_use",
    "id": "toolu_01VbX3kq9Tz2nD8sYw4LmP6e",
    "name": "Read",
    "input": {}
  }
}

#8content_block_delta+1,981 ms

{
  "type": "content_block_delta",
  "index": 1,
  "delta": {
    "type": "input_json_delta",
    "partial_json": "{\"file_path\": \"/Users/ann/app/Tests/"
  }
}

#9content_block_delta+2,412 ms

{
  "type": "content_block_delta",
  "index": 1,
  "delta": {
    "type": "input_json_delta",
    "partial_json": "FixtureTests.swift\"}"
  }
}

#10content_block_stop+2,412 ms

{
  "type": "content_block_stop",
  "index": 1
}

#11message_delta+3,301 ms

{
  "type": "message_delta",
  "delta": {
    "stop_reason": "tool_use",
    "stop_sequence": null
  },
  "usage": {
    "output_tokens": 61
  }
}

#12message_stop+3,301 ms

{
  "type": "message_stop"
}