Basic chat completions call with tools

call.json

{
    "model": "gpt-4",
    "tools": [
        {
            "type": "function",
            "function": {
                "name": "get_weather",
                "description": "Get the current weather at a specific location",
                "parameters": {
                    "type": "object",
                    "properties": {
                        "location": {
                            "type": "string",
                            "description": "The location for which we want the weather"
                        }
                    },
                    "required": ["location"]
                }
            }
        }
    ],
    "messages": [
        {
            "role": "system",
            "content": "You're a helpful assistant"
        },
        {
            "role": "user",
            "content": "What is the weather in Nantes, France?"
        }
    ]
}