test

dotnet/samples/GettingStarted/AgentWithAnthropic/Agent_Anthropic_Step02_Reasoning/Agent_Anthropic_Step02_Reasoning.csproj

@@ -0,0 +1,15 @@
+<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_Step02_Reasoning/Program.cs

@@ -0,0 +1,59 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample shows how to create and use an AI agent with reasoning capabilities.
+
+using Anthropic;
+using Anthropic.Core;
+using Anthropic.Models.Messages;
+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";
+var maxTokens = 4096;
+var thinkingTokens = 2048;
+
+var agent = new AnthropicClient(new ClientOptions { APIKey = apiKey })
+    .AsAIAgent(
+        model: model,
+        clientFactory: (chatClient) => chatClient
+            .AsBuilder()
+            .ConfigureOptions(
+                options => options.RawRepresentationFactory = (_) => new MessageCreateParams()
+                {
+                    Model = options.ModelId ?? model,
+                    MaxTokens = options.MaxOutputTokens ?? maxTokens,
+                    Messages = [],
+                    Thinking = new ThinkingConfigParam(new ThinkingConfigEnabled(budgetTokens: thinkingTokens))
+                })
+            .Build());
+
+Console.WriteLine("1. Non-streaming:");
+var response = await agent.RunAsync("Solve this problem step by step: If a train travels 60 miles per hour and needs to cover 180 miles, how long will the journey take? Show your reasoning.");
+
+Console.WriteLine("#### Start Thinking ####");
+Console.WriteLine($"\e[92m{string.Join("\n", response.Messages.SelectMany(m => m.Contents.OfType<TextReasoningContent>().Select(c => c.Text)))}\e[0m");
+Console.WriteLine("#### End Thinking ####");
+
+Console.WriteLine("\n#### Final Answer ####");
+Console.WriteLine(response.Text);
+
+Console.WriteLine("Token usage:");
+Console.WriteLine($"Input: {response.Usage?.InputTokenCount}, Output: {response.Usage?.OutputTokenCount}, {string.Join(", ", response.Usage?.AdditionalCounts ?? [])}");
+Console.WriteLine();
+
+Console.WriteLine("2. Streaming");
+await foreach (var update in agent.RunStreamingAsync("Explain the theory of relativity in simple terms."))
+{
+    foreach (var item in update.Contents)
+    {
+        if (item is TextReasoningContent reasoningContent)
+        {
+            Console.WriteLine($"\e[92m{reasoningContent.Text}\e[0m");
+        }
+        else if (item is TextContent textContent)
+        {
+            Console.WriteLine(textContent.Text);
+        }
+    }
+}

dotnet/samples/GettingStarted/AgentWithAnthropic/Agent_Anthropic_Step02_Reasoning/README.md

@@ -0,0 +1,46 @@
+# Using reasoning with Anthropic agents
+
+This sample demonstrates how to use extended thinking/reasoning capabilities with Anthropic Claude agents.
+
+## What this sample demonstrates
+
+- Creating an AI agent with Anthropic Claude extended thinking
+- Using reasoning capabilities for complex problem solving
+- Extracting thinking and response content from agent output
+- Managing agent lifecycle
+
+## Prerequisites
+
+Before you begin, ensure you have the following prerequisites:
+
+- .NET 8.0 SDK or later
+- Anthropic API key configured
+- Access to Anthropic Claude models with extended thinking support
+
+**Note**: This sample uses Anthropic Claude models with extended thinking. 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_Step02_Reasoning
+```
+
+## Expected behavior
+
+The sample will:
+
+1. Create an agent with Anthropic Claude extended thinking enabled
+2. Run the agent with a complex reasoning prompt
+3. Display the agent's thinking process
+4. Display the agent's final response
+