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.NET: [BREAKING] Change implementation to use AsFunctionTool extension method to create a function from an agent (#686)

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* Change implementation to use AsFunctionTool extension method to create a function from an agent

* Update dotnet/tests/Microsoft.Extensions.AI.Agents.UnitTests/AgentExtensionsTests.cs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Address code review feedback and add a new sample

* Address some code review feedback

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
Mark Wallace
2025-09-15 09:39:38 +01:00
committed by GitHub
Unverified
parent 2a75482777
commit 636e3acf37
8 changed files with 115 additions and 58 deletions
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dotnet/samples/GettingStarted/Agents/Agent_Step12_AsFunctionTool/Agent_Step12_AsFunctionTool.csproj
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net9.0</TargetFramework>
<LangVersion>12</LangVersion>
<Nullable>enable</Nullable>
<ImplicitUsings>disable</ImplicitUsings>
<UserSecretsId>3afc9b74-af74-4d8e-ae96-fa1c511d11ac</UserSecretsId>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Azure.AI.OpenAI" />
<PackageReference Include="Azure.Identity" />
<PackageReference Include="Microsoft.Extensions.Hosting" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\..\..\..\src\Microsoft.Extensions.AI.Agents.OpenAI\Microsoft.Extensions.AI.Agents.OpenAI.csproj" />
<ProjectReference Include="..\..\..\..\src\Microsoft.Extensions.AI.Agents\Microsoft.Extensions.AI.Agents.csproj" />
</ItemGroup>
</Project>
dotnet/samples/GettingStarted/Agents/Agent_Step12_AsFunctionTool/Program.cs
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// Copyright (c) Microsoft. All rights reserved.
// This sample shows how to create and use a Azure OpenAI AI agent as a function tool.
using System;
using System.ComponentModel;
using Azure.AI.OpenAI;
using Azure.Identity;
using Microsoft.Extensions.AI;
using Microsoft.Extensions.AI.Agents;
using OpenAI;
var endpoint = Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT") ?? throw new InvalidOperationException("AZURE_OPENAI_ENDPOINT is not set.");
var deploymentName = Environment.GetEnvironmentVariable("AZURE_OPENAI_DEPLOYMENT_NAME") ?? "gpt-4o-mini";
[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.";
// Create the chat client and agent, and provide the function tool to the agent.
AIAgent weatherAgent = new AzureOpenAIClient(
new Uri(endpoint),
new AzureCliCredential())
.GetChatClient(deploymentName)
.CreateAIAgent(
instructions: "You answer questions about the weather.",
name: "WeatherAgent",
description: "An agent that answers questions about the weather.",
tools: [AIFunctionFactory.Create(GetWeather)]);
// Create the main agent, and provide the weather agent as a function tool.
AIAgent agent = new AzureOpenAIClient(
new Uri(endpoint),
new AzureCliCredential())
.GetChatClient(deploymentName)
.CreateAIAgent(instructions: "You are a helpful assistant who responds in French.", tools: [weatherAgent.AsAIFunction()]);
// Invoke the agent and output the text result.
Console.WriteLine(await agent.RunAsync("What is the weather like in Amsterdam?"));
dotnet/samples/GettingStarted/Agents/README.md
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@@ -37,6 +37,7 @@ Before you begin, ensure you have the following prerequisites:
|[Dependency injection with a simple agent](./Agent_Step09_DependencyInjection/)|This sample demonstrates how to add and resolve an agent with a dependency injection container|
|[Exposing a simple agent as MCP tool](./Agent_Step10_AsMcpTool/)|This sample demonstrates how to expose an agent as an MCP tool|
|[Using images with a simple agent](./Agent_Step11_UsingImages/)|This sample demonstrates how to use image multi-modality with an AI agent|
|[Exposing a simple agent a function tool](./Agent_Step12_AsFunctionTool/)|This sample demonstrates how to expose an agent as a function tool|
## Running the samples from the console