借助函数调用,您可以将模型连接到外部工具和 API。 模型不会生成文本回答,而是会确定何时调用特定函数,并提供执行实际操作所需的参数。这使得模型能够充当自然语言与实际操作和数据之间的桥梁。函数调用有 3 个主要应用场景:
- 执行操作:使用 API 与外部系统互动,例如安排预约、创建账单、发送电子邮件或控制智能家居设备。
- 扩充知识:从数据库、API 和知识库等外部来源获取信息。
- 扩展功能:使用外部工具执行计算,并扩展模型的功能限制,例如使用计算器或创建图表。
您可以浏览以下示例,了解这些使用情形:
安排会议
此示例展示了如何定义一个函数,用于在特定时间安排与参会者的会议,从而使模型能够解析用户请求并返回结构化实参,以触发外部系统中的操作。
Python
from google import genai
schedule_meeting_function = {
"type": "function",
"name": "schedule_meeting",
"description": "Schedules a meeting with specified attendees at a given time and date.",
"parameters": {
"type": "object",
"properties": {
"attendees": {"type": "array", "items": {"type": "string"}},
"date": {"type": "string", "description": "Date (e.g., '2024-07-29')"},
"time": {"type": "string", "description": "Time (e.g., '15:00')"},
"topic": {"type": "string", "description": "The meeting topic."},
},
"required": ["attendees", "date", "time", "topic"],
},
}
client = genai.Client()
interaction = client.interactions.create(
model="gemini-3.6-flash",
input="Schedule a meeting with Bob and Alice for 03/14/2025 at 10:00 AM about Q3 planning.",
tools=[{"type": "function", **schedule_meeting_function}],
)
for step in interaction.steps:
if step.type == "function_call":
print(f"Function to call: {step.name}")
print(f"Arguments: {step.arguments}")
JavaScript
import { GoogleGenAI } from '@google/genai';
const client = new GoogleGenAI({});
const scheduleMeetingFunction = {
type: 'function',
name: 'schedule_meeting',
description: 'Schedules a meeting with specified attendees at a given time and date.',
parameters: {
type: 'object',
properties: {
attendees: { type: 'array', items: { type: 'string' } },
date: { type: 'string', description: