feat: Add MCP server to Game Studio & Stride Engine for AI agent integration

.gitignore

@@ -160,3 +160,6 @@ fastlane/report.xml
 fastlane/screenshots
 *.user
 project.lock.json
+
+# LLM
+.claude/

.mcp.json

@@ -0,0 +1,12 @@
+{
+  "mcpServers": {
+    "stride-game-runtime": {
+      "type": "sse",
+      "url": "http://localhost:5272/sse"
+    },
+    "stride-game-studio": {
+      "type": "sse",
+      "url": "http://localhost:5271/sse"
+    }
+  }
+}

sources/Directory.Packages.props

@@ -43,6 +43,11 @@
     <PackageVersion Include="Vortice.Vulkan" Version="3.0.3" />
     <PackageVersion Include="WinPixEventRuntime" Version="1.0.240308001" />
   </ItemGroup>
+  <!-- MCP dependencies -->
+  <ItemGroup>
+    <PackageVersion Include="ModelContextProtocol" Version="0.8.0-preview.1" />
+    <PackageVersion Include="ModelContextProtocol.AspNetCore" Version="0.8.0-preview.1" />
+  </ItemGroup>
   <!-- Other dependencies -->
   <ItemGroup>
     <PackageVersion Include="JetBrains.Rider.PathLocator" Version="1.0.12" />

sources/editor/Stride.Assets.Presentation/AssetEditors/EntityHierarchyEditor/Game/EditorGameScreenshotService.cs

@@ -0,0 +1,49 @@
+// Copyright (c) .NET Foundation and Contributors (https://dotnetfoundation.org/ & https://stride3d.net)
+// Distributed under the MIT license. See the LICENSE.md file in the project root for more information.
+
+using System;
+using System.IO;
+using System.Threading.Tasks;
+using Stride.Assets.Presentation.AssetEditors.EntityHierarchyEditor.Services;
+using Stride.Assets.Presentation.AssetEditors.GameEditor.Game;
+using Stride.Assets.Presentation.AssetEditors.GameEditor.ViewModels;
+using Stride.Editor.EditorGame.Game;
+using Stride.Graphics;
+
+namespace Stride.Assets.Presentation.AssetEditors.EntityHierarchyEditor.Game
+{
+    public class EditorGameScreenshotService : EditorGameServiceBase, IEditorGameScreenshotService
+    {
+        private readonly GameEditorViewModel editor;
+
+        private EntityHierarchyEditorGame game;
+
+        public EditorGameScreenshotService(GameEditorViewModel editor)
+        {
+            this.editor = editor;
+        }
+
+        protected override Task<bool> Initialize(EditorServiceGame editorGame)
+        {
+            if (editorGame == null) throw new ArgumentNullException(nameof(editorGame));
+            game = (EntityHierarchyEditorGame)editorGame;
+
+            return Task.FromResult(true);
+        }
+
+        /// <inheritdoc/>
+        public async Task<byte[]> CaptureViewportAsync()
+        {
+            return await editor.Controller.InvokeAsync(() =>
+            {
+                var presenter = game.GraphicsDevice.Presenter;
+                if (presenter?.BackBuffer == null)
+                    throw new InvalidOperationException("Graphics presenter or back buffer is not available.");
+
+                using var stream = new MemoryStream();
+                presenter.BackBuffer.Save(game.GraphicsContext.CommandList, stream, ImageFileType.Png);
+                return stream.ToArray();
+            });
+        }
+    }
+}

sources/editor/Stride.Assets.Presentation/AssetEditors/EntityHierarchyEditor/Services/EntityHierarchyEditorController.cs

@@ -58,6 +58,7 @@ protected override void InitializeServices(EditorGameServiceRegistry services)
             services.Add(new PhysicsDebugShapeService());
             services.Add(new EditorGameLightProbeGizmoService(Editor));
             services.Add(new EditorGameCubemapService(Editor));
+            services.Add(new EditorGameScreenshotService(Editor));
             services.Add(new EditorGameSpaceMarkerService());
             services.Add(new EditorGameCameraOrientationService());
             services.Add(new EditorGameComponentGizmoService(this));

sources/editor/Stride.Assets.Presentation/AssetEditors/EntityHierarchyEditor/Services/IEditorGameScreenshotService.cs

@@ -0,0 +1,20 @@
+// Copyright (c) .NET Foundation and Contributors (https://dotnetfoundation.org/ & https://stride3d.net)
+// Distributed under the MIT license. See the LICENSE.md file in the project root for more information.
+
+using System.Threading.Tasks;
+using Stride.Editor.EditorGame.ViewModels;
+
+namespace Stride.Assets.Presentation.AssetEditors.EntityHierarchyEditor.Services
+{
+    /// <summary>
+    /// Viewport screenshot capture service.
+    /// </summary>
+    public interface IEditorGameScreenshotService : IEditorGameViewModelService
+    {
+        /// <summary>
+        /// Captures the current viewport as a PNG image.
+        /// </summary>
+        /// <returns>The PNG image data as a byte array.</returns>
+        Task<byte[]> CaptureViewportAsync();
+    }
+}

sources/editor/Stride.Assets.Presentation/AssetEditors/GameEditor/ViewModels/GameEditorViewModel.cs

@@ -7,6 +7,7 @@
 using Stride.Core.Presentation.Commands;
 using Stride.Core.Presentation.Interop;
 using Stride.Assets.Presentation.AssetEditors.GameEditor.Services;
+using Stride.Editor.EditorGame.ViewModels;
 
 namespace Stride.Assets.Presentation.AssetEditors.GameEditor.ViewModels
 {
@@ -53,6 +54,14 @@ protected GameEditorViewModel([NotNull] AssetViewModel asset, [NotNull] Func<Gam
         [NotNull]
         protected internal virtual IEditorGameController Controller { get; }
 
+        /// <summary>
+        /// Gets an editor game service by its interface type.
+        /// </summary>
+        /// <typeparam name="T">The service interface type.</typeparam>
+        /// <returns>The service instance.</returns>
+        public T GetEditorGameService<T>() where T : IEditorGameViewModelService
+            => Controller.GetService<T>();
+
         [NotNull]
         public ICommandBase CopyErrorToClipboardCommand { get; }
 

sources/editor/Stride.Assets.Presentation/AssetEditors/UIEditor/Services/UIEditorController.cs

@@ -15,6 +15,7 @@
 using Stride.Core.Mathematics;
 using Stride.Core.Quantum;
 using Stride.Assets.Presentation.AssetEditors.AssetCompositeGameEditor.Services;
+using Stride.Assets.Presentation.AssetEditors.EntityHierarchyEditor.Game;
 using Stride.Assets.Presentation.AssetEditors.PrefabEditor.Game;
 using Stride.Assets.Presentation.AssetEditors.UIEditor.Game;
 using Stride.Assets.Presentation.AssetEditors.UIEditor.ViewModels;
@@ -364,6 +365,7 @@ protected override void InitializeServices(EditorGameServiceRegistry services)
 
             services.Add(new UIEditorGameCameraService(this));
             services.Add(AdornerService = new UIEditorGameAdornerService(this));
+            services.Add(new EditorGameScreenshotService(Editor));
         }
 
         /// <inheritdoc/>