response = client.messages.create(
    model="claude-3-opus-20240229",
    max_tokens=1024,
    tools=[
        {
            "name": "get_weather",
            "description": "Get the current weather in a given location",
            "input_schema": {
                "type": "object",
                "properties": {
                    "location": {
                        "type": "string",
                        "description": "The city and state, e.g. San Francisco, CA"
                    },
                    "unit": {
                        "type": "string",
                        "enum": ["celsius", "fahrenheit"],
                        "description": "The unit of temperature, either 'celsius' or 'fahrenheit'"
                    }
                },
                "required": ["location"]
            }
        },
        {
            "name": "get_time",
            "description": "Get the current time in a given time zone",
            "input_schema": {
                "type": "object",
                "properties": {
                    "timezone": {
                        "type": "string",
                        "description": "The IANA time zone name, e.g. America/Los_Angeles"
                    }
                },
                "required": ["timezone"]
            }
        }
    ],
    messages=[
        {
            "role": "user",
            "content": "What is the weather like right now in New York City, NY?"
        }
    ]
)

{'content': [TextBlock(text='<thinking>\nThe get_weather function is relevant to answer this question, as it provides the current weather for a given location.\n\nIt requires the "location" parameter, which in this case is provided by the user as "New York City, NY". \n\nThe "unit" parameter is optional. The user did not specify a preference, so we can use the default.\n\nSince all required parameters are available, we can proceed with calling the get_weather function to get the current weather in New York City.\n</thinking>', type='text'),
             ToolUseBlock(id='toolu_013gp9gPBaYhPVLMeq4N34yU', input={'location': 'New York City, NY'}, name='get_weather', type='tool_use')],
 'id': 'msg_01H62BKGLJBD8zstmvW21Cp4',
 'model': 'claude-3-opus-20240229',
 'role': 'assistant',
 'stop_reason': 'tool_use',
 'stop_sequence': None,
 'type': 'message',
 'usage': Usage(input_tokens=748, output_tokens=165)}