Merge pull request #24 from anthropics/release-please--branches--main--changes--next

release: 10.2.1

Author: sd-st

.editorconfig

@@ -21,6 +21,7 @@ tab_width = 4
 end_of_line = crlf
 insert_final_newline = true
 
+dotnet_diagnostic.CA1510.severity = none  # Use ArgumentNullException throw helper
 dotnet_diagnostic.IDE0060.severity = none # Caused by resource with no methods and no subresources
 dotnet_diagnostic.IDE1006.severity = none # Some names may not match up with C# conventions
 dotnet_diagnostic.IDE0290.severity = none # Don't prefer primary constructors

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "10.2.0"
+  ".": "10.2.1"
 }

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## 10.2.1 (2025-11-20)
+
+Full Changelog: [v10.2.0...v10.2.1](https://github.com/anthropics/anthropic-sdk-csharp/compare/v10.2.0...v10.2.1)
+
 ## 10.2.0 (2025-11-20)
 
 Full Changelog: [v10.1.2...v10.2.0](https://github.com/anthropics/anthropic-sdk-csharp/compare/v10.1.2...v10.2.0)

README.md

@@ -156,6 +156,33 @@ await foreach (var message in client.Messages.CreateStreaming(parameters))
 }
 ```
 
+## `IChatClient`
+
+The SDK provides an implementation of the `IChatClient` interface from the `Microsoft.Extensions.AI.Abstractions` library.
+This enables `AnthropicClient` (and `Anthropic.Services.IBetaService`) to be used with other libraries that integrate with
+these core abstractions. For example, tools in the MCP C# SDK (`ModelContextProtocol`) library can be used directly with an `AnthropicClient`
+exposed via `IChatClient`.
+
+```csharp
+using Anthropic;
+using Microsoft.Extensions.AI;
+using ModelContextProtocol.Client;
+
+// Configured using the ANTHROPIC_API_KEY, ANTHROPIC_AUTH_TOKEN and ANTHROPIC_BASE_URL environment variables
+IChatClient chatClient = client.AsIChatClient("claude-haiku-4-5")
+    .AsBuilder()
+    .UseFunctionInvocation()
+    .Build();
+
+// Using McpClient from the MCP C# SDK
+McpClient learningServer = await McpClient.CreateAsync(
+    new HttpClientTransport(new() { Endpoint = new("https://learn.microsoft.com/api/mcp") }));
+
+ChatOptions options = new() { Tools = [.. await learningServer.ListToolsAsync()] };
+
+Console.WriteLine(await chatClient.GetResponseAsync("Tell me about IChatClient", options));
+```
+
 ## Binary responses
 
 The SDK defines methods that return binary responses, which are used for API responses that shouldn't necessarily be parsed, like non-JSON data.

examples/ChatClientExample/ChatClientExample.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Anthropic\Anthropic.csproj" />
+    <PackageReference Include="Microsoft.Extensions.AI" Version="10.0.0" />
+  </ItemGroup>
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+</Project>

examples/ChatClientExample/Program.cs

@@ -0,0 +1,32 @@
+using Anthropic;
+using Microsoft.Extensions.AI;
+
+// Configured using the ANTHROPIC_API_KEY, ANTHROPIC_AUTH_TOKEN and ANTHROPIC_BASE_URL environment variables
+IChatClient chatClient = new AnthropicClient()
+    .AsIChatClient("claude-haiku-4-5")
+    .AsBuilder()
+    .UseFunctionInvocation()
+    .Build();
+
+ChatOptions options = new()
+{
+    Tools =
+    [
+        AIFunctionFactory.Create(
+            () => Environment.UserName,
+            "get_current_user_name",
+            "Gets the current user's name."
+        ),
+    ],
+};
+
+await foreach (
+    var update in chatClient.GetStreamingResponseAsync(
+        "Write a Haiku about the current user's name",
+        options
+    )
+)
+{
+    Console.Write(update);
+}
+Console.WriteLine();

src/Anthropic.Foundry/Anthropic.Foundry.csproj

@@ -13,6 +13,10 @@
     <PackageReference Include="Microsoft.Rest.ClientRuntime.Azure.Authentication" Version="2.4.1" />
     <PackageReference Include="Azure.Identity" Version="1.17.0" />
   </ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+    <PackageReference Include="System.Collections.Immutable" Version="8.0.0" />
+    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.3" />
+  </ItemGroup>
   <PropertyGroup>
     <BuildPackage>true</BuildPackage>
     <Deterministic>true</Deterministic>
@@ -39,9 +43,6 @@
     <SupportedFrameworks>net8.0;net9.0;netstandard2.0</SupportedFrameworks>
   </PropertyGroup>
   <ItemGroup>
-    <None Include="../Anthropic/GlobalShims.cs">
-      <Link>%(RecursiveDir)/%(FileName)%(Extension)</Link>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
+    <Compile Include="../Anthropic/GlobalShims.cs" />
   </ItemGroup>
 </Project>

src/Anthropic.Foundry/AnthropicFoundryClient.cs

@@ -1,8 +1,3 @@
-#if NETSTANDARD2_0
-global using ValueTask = System.Threading.Tasks.Task;
-#endif
-
-using Anthropic;
 using Anthropic.Core;
 
 namespace Anthropic.Foundry;
@@ -65,6 +60,6 @@ CancellationToken cancellationToken
     {
         _azureCredentials.Apply(requestMessage);
 
-        return ValueTask.CompletedTask;
+        return default;
     }
 }