curl https://api.anthropic.com/v1/messages   -H "content-type: application/json"   -H "x-api-key: $ANTHROPIC_API_KEY"   -H "anthropic-version: 2023-06-01"   -H "anthropic-beta: tools-2024-04-04"   -d '{
    "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"
            }
          },
          "required": ["location"]
        }
      }
    ],
    "messages": [
      {
        "role": "user",
        "content": "What is the weather like in London?"
      }
    ]
  }'
{"id":"msg_01DvvYuXbiFcdHauAHfS1jzo","type":"message","role":"assistant","model":"claude-3-opus-20240229","stop_sequence":null,"usage":{"input_tokens":487,"output_tokens":135},"content":[{"type":"text","text":"<thinking>\nThe user is asking about the current weather, so the relevant tool to use is get_weather. This function requires a \"location\" parameter.\nThe user has provided the city \"London\" but not the state or country. However, since London is a well-known city, we can reasonably infer they are referring to London, United Kingdom. \n</thinking>"},{"type":"tool_use","id":"toolu_01Nu82nfXTcUufvPqZ4VHJmv","name":"get_weather","input":{"location":"London, United Kingdom"}}],"stop_reason":"tool_use"}