test

dotnet/samples/GettingStarted/AgentWithAnthropic/Agent_Anthropic_Step03_UsingFunctionTools/Agent_Anthropic_Step03_UsingFunctionTools.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.Anthropic\Microsoft.Agents.AI.Anthropic.csproj" />
+  </ItemGroup>
+
+</Project>

dotnet/samples/GettingStarted/AgentWithAnthropic/Agent_Anthropic_Step03_UsingFunctionTools/Program.cs

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+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample demonstrates how to use an agent with function tools.
+// It shows both non-streaming and streaming agent interactions using weather-related tools.
+
+using System.ComponentModel;
+using Anthropic;
+using Microsoft.Agents.AI;
+using Microsoft.Extensions.AI;
+
+var apiKey = Environment.GetEnvironmentVariable("ANTHROPIC_API_KEY") ?? throw new InvalidOperationException("ANTHROPIC_API_KEY is not set.");
+var model = Environment.GetEnvironmentVariable("ANTHROPIC_MODEL") ?? "claude-haiku-4-5";
+
+[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.";
+
+const string AssistantInstructions = "You are a helpful assistant that can get weather information.";
+const string AssistantName = "WeatherAssistant";
+
+// Define the agent with function tools.
+AITool tool = AIFunctionFactory.Create(GetWeather);
+
+// Get anthropic client to create agents.
+AIAgent agent = new AnthropicClient { APIKey = apiKey }
+    .AsAIAgent(model: model, instructions: AssistantInstructions, name: AssistantName, tools: [tool]);
+
+// Non-streaming agent interaction with function tools.
+AgentThread thread = await agent.GetNewThreadAsync();
+Console.WriteLine(await agent.RunAsync("What is the weather like in Amsterdam?", thread));
+
+// Streaming agent interaction with function tools.
+thread = await agent.GetNewThreadAsync();
+await foreach (AgentResponseUpdate update in agent.RunStreamingAsync("What is the weather like in Amsterdam?", thread))
+{
+    Console.WriteLine(update);
+}

dotnet/samples/GettingStarted/AgentWithAnthropic/Agent_Anthropic_Step03_UsingFunctionTools/README.md

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+# Using Function Tools with Anthropic agents
+
+This sample demonstrates how to use function tools with Anthropic Claude agents, allowing agents to call custom functions to retrieve information.
+
+## What this sample demonstrates
+
+- Creating function tools using AIFunctionFactory
+- Passing function tools to an Anthropic Claude agent
+- Running agents with function tools (text output)
+- Running agents with function tools (streaming output)
+- Managing agent lifecycle
+
+## Prerequisites
+
+Before you begin, ensure you have the following prerequisites:
+
+- .NET 8.0 SDK or later
+- Anthropic API key configured
+
+**Note**: This sample uses Anthropic Claude models. For more information, see [Anthropic documentation](https://docs.anthropic.com/).
+
+Set the following environment variables:
+
+```powershell
+$env:ANTHROPIC_API_KEY="your-anthropic-api-key"  # Replace with your Anthropic API key
+$env:ANTHROPIC_MODEL="your-anthropic-model"  # Replace with your Anthropic model
+```
+
+## Run the sample
+
+Navigate to the AgentWithAnthropic sample directory and run:
+
+```powershell
+cd dotnet\samples\GettingStarted\AgentWithAnthropic
+dotnet run --project .\Agent_Anthropic_Step03_UsingFunctionTools
+```
+
+## Expected behavior
+
+The sample will:
+
+1. Create an agent named "WeatherAssistant" with a GetWeather function tool
+2. Run the agent with a text prompt asking about weather
+3. The agent will invoke the GetWeather function tool to retrieve weather information
+4. Run the agent again with streaming to display the response as it's generated
+5. Clean up resources by deleting the agent
+