函数调用的流程和对话接口类似，下面我们还是以获取当地天气为例，给出函数调用的示例代码：

curl --location --request POST 'https://geekai.co/api/v1/responses' \
--header 'Authorization: Bearer {YOUR_GEEKAI_API_KEY}' \
--header 'Content-Type: application/json' \
--data-raw '{
    "model": "gpt-4o-mini",
    "input": "杭州今天天气如何?",
    "tools": [
      {
        "type": "function",
        "name": "get_current_weather",
        "description": "Get the current weather in a given location",
        "parameters": {
          "type": "object",
          "properties": {
            "location": {
              "type": "string",
              "description": "The city and state, e.g. 浙江杭州"
            },
            "unit": {
              "type": "string",
              "enum": ["℃", "℉"]
            }
          },
          "required": ["location", "unit"]
        }
      }
    ],
    "tool_choice": "auto"
}'