modelcontextprotocol · eiriktsarpalis · Sep 30, 2025 · Sep 30, 2025 · Sep 30, 2025 · Sep 30, 2025
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
@@ -3,7 +3,7 @@
 	"image": "mcr.microsoft.com/devcontainers/dotnet:1-8.0-jammy",
 	"features": {
 		"ghcr.io/devcontainers/features/dotnet:2": {
-			"version": "9.0"
+			"version": "10.0"
 		},
 		"ghcr.io/devcontainers/features/node:1": {}
 	},

diff --git a/.github/workflows/ci-build-test.yml b/.github/workflows/ci-build-test.yml
@@ -43,8 +43,8 @@ jobs:
       uses: actions/setup-dotnet@67a3573c9a986a3f9c594539f4ab511d57bb3ce9 # v4.3.1
       with:
         dotnet-version: |
+          10.0.x
           9.0.x
-          8.0.x
 
     # NetFX testing on non-Windows requires mono
     - name: Setup Mono
@@ -78,7 +78,6 @@ jobs:
         --filter '(Execution!=Manual)'
         --no-build
         --configuration ${{ matrix.configuration }}
-        --logger "console;verbosity=normal"
         --logger "trx"
         --logger "GitHubActions;summary.includePassedTests=true;summary.includeSkippedTests=true"
         --blame

diff --git a/.github/workflows/ci-code-coverage.yml b/.github/workflows/ci-code-coverage.yml
@@ -15,8 +15,8 @@ jobs:
         uses: actions/setup-dotnet@67a3573c9a986a3f9c594539f4ab511d57bb3ce9 # v4.3.1
         with:
           dotnet-version: |
+            10.0.x
             9.0.x
-            8.0.x
 
       - name: Download test results
         uses: actions/download-artifact@95815c38cf2ff2164869cbab79da8d1f422bc89e # v4.2.1

diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
@@ -32,7 +32,9 @@ jobs:
     - name: .NET Setup
       uses: actions/setup-dotnet@67a3573c9a986a3f9c594539f4ab511d57bb3ce9 # v4.3.1
       with:
-        dotnet-version: 9.x
+        dotnet-version: |
+          10.0.x
+          9.0.x
 
     - name: Generate documentation
       run: make generate-docs

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
@@ -52,7 +52,9 @@ jobs:
     - name: Set up .NET
       uses: actions/setup-dotnet@67a3573c9a986a3f9c594539f4ab511d57bb3ce9 # v4.3.1
       with:
-        dotnet-version: 9.0.x
+        dotnet-version: |
+          10.0.x
+          9.0.x
 
     - name: Build
       run: dotnet build --configuration ${{ matrix.configuration }}

diff --git a/Directory.Packages.props b/Directory.Packages.props
@@ -34,6 +34,15 @@
     <PackageVersion Include="System.IO.Pipelines" Version="$(System9Version)" />
   </ItemGroup>
 
+  <!-- Product dependencies .NET 10 -->
+  <ItemGroup Condition="'$(TargetFramework)' == 'net10.0'">
+    <PackageVersion Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="$(System10Version)" />
+    <PackageVersion Include="Microsoft.IdentityModel.Tokens" Version="8.9.0" />
+    <PackageVersion Include="Microsoft.Extensions.Hosting.Abstractions" Version="$(System10Version)" />
+    <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="$(System10Version)" />
+    <PackageVersion Include="System.IO.Pipelines" Version="$(System10Version)" />
+  </ItemGroup>
+
   <!-- Product dependencies shared -->
   <ItemGroup>
     <PackageVersion Include="Microsoft.Extensions.AI.Abstractions" Version="$(MicrosoftExtensionsAIVersion)" />

diff --git a/global.json b/global.json
@@ -1,6 +1,7 @@
 {
   "sdk": {
-    "version": "9.0.204",
-    "rollForward": "minor"
+    "version": "10.0.100-rc.1",
+    "rollForward": "minor",
+    "allowPrerelease": true
   }
 }
diff --git a/samples/TestServerWithHosting/TestServerWithHosting.csproj b/samples/TestServerWithHosting/TestServerWithHosting.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFrameworks>net9.0;net8.0;net472</TargetFrameworks>
+    <TargetFrameworks>net10.0;net9.0;net8.0;net472</TargetFrameworks>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <PublishAot Condition="'$(TargetFramework)' == 'net9.0'">true</PublishAot>

diff --git a/tests/ModelContextProtocol.AspNetCore.Tests/ModelContextProtocol.AspNetCore.Tests.csproj b/tests/ModelContextProtocol.AspNetCore.Tests/ModelContextProtocol.AspNetCore.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net9.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <IsPackable>false</IsPackable>

diff --git a/tests/ModelContextProtocol.AspNetCore.Tests/StreamableHttpServerConformanceTests.cs b/tests/ModelContextProtocol.AspNetCore.Tests/StreamableHttpServerConformanceTests.cs
@@ -57,7 +57,11 @@ public async ValueTask DisposeAsync()
         base.Dispose();
     }
 
+#if !NET10_0
     [Fact]
+#else
+    [Fact(Skip = "https://github.com/modelcontextprotocol/csharp-sdk/issues/823")]
+#endif
     public async Task NegativeNonInfiniteIdleTimeout_Throws_ArgumentOutOfRangeException()
     {
         Builder.Services.AddMcpServer().WithHttpTransport(options =>
@@ -69,7 +73,11 @@ public async Task NegativeNonInfiniteIdleTimeout_Throws_ArgumentOutOfRangeExcept
         Assert.Contains("IdleTimeout", ex.Message);
     }
 
+#if !NET10_0
     [Fact]
+#else
+    [Fact(Skip = "https://github.com/modelcontextprotocol/csharp-sdk/issues/823")]
+#endif
     public async Task NegativeMaxIdleSessionCount_Throws_ArgumentOutOfRangeException()
     {
         Builder.Services.AddMcpServer().WithHttpTransport(options =>

diff --git a/tests/ModelContextProtocol.TestOAuthServer/ModelContextProtocol.TestOAuthServer.csproj b/tests/ModelContextProtocol.TestOAuthServer/ModelContextProtocol.TestOAuthServer.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFrameworks>net9.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>

diff --git a/tests/ModelContextProtocol.TestServer/ModelContextProtocol.TestServer.csproj b/tests/ModelContextProtocol.TestServer/ModelContextProtocol.TestServer.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFrameworks>net9.0;net8.0;net472</TargetFrameworks>
+    <TargetFrameworks>net10.0;net9.0;net8.0;net472</TargetFrameworks>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <AssemblyName>TestServer</AssemblyName>

diff --git a/tests/ModelContextProtocol.TestSseServer/ModelContextProtocol.TestSseServer.csproj b/tests/ModelContextProtocol.TestSseServer/ModelContextProtocol.TestSseServer.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFrameworks>net9.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <AssemblyName>TestSseServer</AssemblyName>

diff --git a/tests/ModelContextProtocol.Tests/ModelContextProtocol.Tests.csproj b/tests/ModelContextProtocol.Tests/ModelContextProtocol.Tests.csproj
@@ -2,13 +2,15 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFrameworks>net9.0;net8.0;net472</TargetFrameworks>
+    <TargetFrameworks>net10.0;net9.0;net8.0;net472</TargetFrameworks>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
 
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
     <RootNamespace>ModelContextProtocol.Tests</RootNamespace>
+    <!-- https://github.com/dotnet/sdk/issues/51060 -->
+    <NoWarn>$(NoWarn);NU1903;NU1902</NoWarn>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(TargetFramework)' == 'net9.0'">