步骤 2：添加工具

工具允许代理调用自定义函数，例如提取天气数据、查询数据库或调用 API。

将工具定义为具有 [Description] 属性的任何方法：

using System.ComponentModel;

[Description("Get the weather for a given location.")]
static string GetWeather([Description("The location to get the weather for.")] string location)
    => $"The weather in {location} is cloudy with a high of 15°C.";

使用工具创建代理：

using System;
using Azure.AI.Projects;
using Azure.Identity;
using Microsoft.Agents.AI;
using Microsoft.Extensions.AI;

var endpoint = Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT")
    ?? throw new InvalidOperationException("Set AZURE_OPENAI_ENDPOINT");
var deploymentName = Environment.GetEnvironmentVariable("AZURE_OPENAI_DEPLOYMENT_NAME") ?? "gpt-4o-mini";

AIAgent agent = new AIProjectClient(new Uri(endpoint), new DefaultAzureCredential())
    .AsAIAgent(
        model: deploymentName,
        instructions: "You are a helpful assistant.",
        tools: [AIFunctionFactory.Create(GetWeather)]);

警告

DefaultAzureCredential 对于开发来说很方便，但在生产中需要仔细考虑。 在生产环境中，请考虑使用特定凭据（例如）， ManagedIdentityCredential以避免延迟问题、意外凭据探测以及回退机制的潜在安全风险。

在合适的时候，代理会自动调用您的工具。

Console.WriteLine(await agent.RunAsync("What is the weather like in Amsterdam?"));

小窍门

有关完整的可运行示例应用程序，请参阅 此处 。

使用 @tool 修饰器定义工具：

# NOTE: approval_mode="never_require" is for sample brevity.
# Use "always_require" in production for user confirmation before tool execution.
@tool(approval_mode="never_require")
def get_weather(
    location: Annotated[str, Field(description="The location to get the weather for.")],
) -> str:
    """Get the weather for a given location."""
    conditions = ["sunny", "cloudy", "rainy", "stormy"]
    return f"The weather in {location} is {conditions[randint(0, 3)]} with a high of {randint(10, 30)}°C."

使用工具创建代理：

agent = Agent(
    client=client,
    name="WeatherAgent",
    instructions="You are a helpful weather agent. Use the get_weather tool to answer questions.",
    tools=[get_weather],
)

小窍门

请参阅 完整示例以获取完整可运行文件。

使用 functool 定义工具：

import (
    "context"
    "fmt"

    "github.com/microsoft/agent-framework-go/tool"
    "github.com/microsoft/agent-framework-go/tool/functool"
)

var weatherTool = functool.MustNew(functool.Config{
    Name:        "weather",
    Description: "Get the current weather for a given location",
}, func(_ context.Context, location string) (string, error) {
    return fmt.Sprintf("The weather in %s is cloudy with a high of 15°C.", location), nil
})

使用工具创建代理：

a := foundryprovider.NewAgent(
    endpoint,
    token,
    foundryprovider.ModelDeployment(model),
    foundryprovider.AgentConfig{
        Instructions: "You are a helpful assistant",
        Config: agent.Config{
            Tools: []tool.Tool{weatherTool},
        },
    },
)

在合适的时候，代理会自动调用您的工具。

resp, err := a.RunText(ctx, "What is the weather like in Amsterdam?").Collect()
fmt.Println(resp, err)

小窍门

请参阅 完整示例以获取完整可运行文件。

后续步骤

步骤 3：多轮次对话

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