{
  "model_name": "test-time-parse-invalid",
  "expects": {
    "tools_used": ["time"],
    "min_responses": 1
  },
  "steps": [
    {
      "request_hint": { "last_user_message_contains": "parse" },
      "response": {
        "type": "tool_calls",
        "tool_calls": [
          {
            "id": "call_time_bad",
            "name": "time",
            "arguments": { "operation": "parse", "timestamp": "not-a-valid-timestamp" }
          }
        ],
        "input_tokens": 100,
        "output_tokens": 25
      }
    },
    {
      "response": {
        "type": "text",
        "content": "The timestamp 'not-a-valid-timestamp' could not be parsed. Please provide a valid ISO 8601 timestamp like '2024-01-15T10:30:00Z'.",
        "input_tokens": 200,
        "output_tokens": 30
      }
    }
  ]
}