函数调用（工具）

如何通过 GetVibe API 使用函数调用（工具使用）：tools 和 tool_choice 参数，以及多轮工具对话。提供 Python 和 curl 编写的完整智能体循环。

函数调用（工具使用）允许模型请求调用你的函数，并获取返回结果。所有 OpenAI 兼容模型均支持此功能。

参数

参数	类型	描述
`tools`	arrayGPT · Claude	工具列表。每个对象：{ type: "function", function: { name, description, parameters } }。
`tool_choice`	string \| objectGPT · Claude	"auto"（由模型决定）、"none"（不调用）、"required"（必须调用）或 { type: "function", function: { name } }：指定工具。
`parallel_tool_calls`	booleanGPT	true — 模型会同时请求多个工具。默认为 true。Claude 不支持此标志，但会自行执行并行调用。

示例：单次调用

curl https://getvibeapi.com/v1/chat/completions \
  -H "Authorization: Bearer $GETVIBE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-6.1-sol",
    "tools": [{
      "type": "function",
      "function": {
        "name": "get_weather",
        "description": "Returns the current weather in a city",
        "parameters": {
          "type": "object",
          "properties": {
            "city": { "type": "string", "description": "City name" }
          },
          "required": ["city"]
        }
      }
    }],
    "tool_choice": "auto",
    "messages": [{"role": "user", "content": "What is the weather in London?"}]
  }'

多轮：传回结果

工具调用后，添加一条包含结果的 tool 角色消息，然后发送下一次请求。

# messages after the first response with tool_call:
messages = [
    {"role": "user", "content": "What is the weather in London?"},
    # model response with the tool call
    {"role": "assistant", "tool_calls": msg.tool_calls, "content": None},
    # the result of your function
    {
        "role": "tool",
        "tool_call_id": msg.tool_calls[0].id,
        "content": json.dumps({"city": "London", "temp": 18, "desc": "Cloudy"}),
    },
]
resp2 = client.chat.completions.create(model="gpt-6.1-sol", tools=tools, messages=messages)
print(resp2.choices[0].message.content)
# → "It is currently 18°C and cloudy in London."

响应示例（tool_call）

{
  "choices": [{
    "message": {
      "role": "assistant",
      "content": null,
      "tool_calls": [{
        "id": "call_abc123",
        "type": "function",
        "function": {
          "name": "get_weather",
          "arguments": "{\"city\":\"London\"}"
        }
      }]
    },
    "finish_reason": "tool_calls"
  }]
}

OpenAI 兼容格式接受 tools 和 tool_choice 字段；实际支持情况取决于所选模型。不要依赖逐字节透传或上游特有的响应字段。