Update to M.E.AI 9.7.0 (modelcontextprotocol#602)

Author: stephentoub

Directory.Packages.props

@@ -3,7 +3,7 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     <System9Version>9.0.5</System9Version>
     <System10Version>10.0.0-preview.4.25258.110</System10Version>
-    <MicrosoftExtensionsAIVersion>9.6.0</MicrosoftExtensionsAIVersion>
+    <MicrosoftExtensionsAIVersion>9.7.0</MicrosoftExtensionsAIVersion>
   </PropertyGroup>
 
   <!-- Product dependencies netstandard -->
@@ -13,7 +13,7 @@
     <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.3" />
     <PackageVersion Include="System.Diagnostics.DiagnosticSource" Version="8.0.1" />
     <PackageVersion Include="System.IO.Pipelines" Version="8.0.0" />
-    <PackageVersion Include="System.Text.Json" Version="8.0.5" />
+    <PackageVersion Include="System.Text.Json" Version="8.0.6" />
     <PackageVersion Include="System.Threading.Channels" Version="8.0.0" />
   </ItemGroup>
 
@@ -53,7 +53,7 @@
       <PrivateAssets>all</PrivateAssets>
     </PackageVersion>
     <PackageVersion Include="GitHubActionsTestLogger" Version="2.4.1" />
-    <PackageVersion Include="Microsoft.Extensions.AI.OpenAI" Version="9.6.0-preview.1.25310.2" />
+    <PackageVersion Include="Microsoft.Extensions.AI.OpenAI" Version="9.7.0-preview.1.25356.2" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="$(System9Version)" />
     <PackageVersion Include="Microsoft.Extensions.Hosting" Version="$(System9Version)" />
     <PackageVersion Include="Microsoft.Extensions.Logging" Version="$(System9Version)" />

samples/AspNetCoreSseServer/Tools/SampleLlmTool.cs

@@ -17,19 +17,14 @@ public static async Task<string> SampleLLM(
         [Description("Maximum number of tokens to generate")] int maxTokens,
         CancellationToken cancellationToken)
     {
-        ChatMessage[] messages =
-        [
-            new(ChatRole.System, "You are a helpful test server."),
-            new(ChatRole.User, prompt),
-        ];
-
         ChatOptions options = new()
         {
+            Instructions = "You are a helpful test server.",
             MaxOutputTokens = maxTokens,
             Temperature = 0.7f,
         };
 
-        var samplingResponse = await thisServer.AsSamplingChatClient().GetResponseAsync(messages, options, cancellationToken);
+        var samplingResponse = await thisServer.AsSamplingChatClient().GetResponseAsync(prompt, options, cancellationToken);
 
         return $"LLM sampling result: {samplingResponse}";
     }

src/ModelContextProtocol.Core/Server/McpServerExtensions.cs

@@ -64,6 +64,11 @@ public static async Task<ChatResponse> SampleAsync(
 
         StringBuilder? systemPrompt = null;
 
+        if (options?.Instructions is { } instructions)
+        {
+            (systemPrompt ??= new()).Append(instructions);
+        }
+
         List<SamplingMessage> samplingMessages = [];
         foreach (var message in messages)
         {