diff --git a/README.md b/README.md
index 66267c1..7569af6 100644
--- a/README.md
+++ b/README.md
@@ -124,6 +124,15 @@
 | `output_read` | Read content from an Output window pane |
 | `output_write` | Write a message to an Output window pane |
 
+### 🪟 Window Tools
+
+| Tool | Description |
+|------|-------------|
+| `toolwindow_hide` | Hide (close) a tool window by caption |
+| `toolwindow_show` | Show a tool window by name (SolutionExplorer, ErrorList, Output, Terminal, etc.) |
+| `window_activate` | Activate (focus) a window by caption |
+| `window_list` | List all open windows with caption, kind, visibility, and GUID |
+
 ## 🛠️ Installation
 
 ### Visual Studio Marketplace
diff --git a/src/CodingWithCalvin.MCPServer.Server/Program.cs b/src/CodingWithCalvin.MCPServer.Server/Program.cs
index ae9f87c..fd48782 100644
--- a/src/CodingWithCalvin.MCPServer.Server/Program.cs
+++ b/src/CodingWithCalvin.MCPServer.Server/Program.cs
@@ -100,7 +100,8 @@ static async Task RunServerAsync(string pipeName, string host, int port, string
     .WithTools<BuildTools>()
     .WithTools<NavigationTools>()
     .WithTools<DebuggerTools>()
-    .WithTools<DiagnosticsTools>();
+    .WithTools<DiagnosticsTools>()
+    .WithTools<WindowTools>();
 
     var app = builder.Build();
 
diff --git a/src/CodingWithCalvin.MCPServer.Server/RpcClient.cs b/src/CodingWithCalvin.MCPServer.Server/RpcClient.cs
index 6ff0f39..a7602ff 100644
--- a/src/CodingWithCalvin.MCPServer.Server/RpcClient.cs
+++ b/src/CodingWithCalvin.MCPServer.Server/RpcClient.cs
@@ -65,7 +65,7 @@ public Task<List<ToolInfo>> GetAvailableToolsAsync()
         }
 
         var tools = new List<ToolInfo>();
-        var toolTypes = new[] { typeof(Tools.SolutionTools), typeof(Tools.DocumentTools), typeof(Tools.BuildTools), typeof(Tools.NavigationTools), typeof(Tools.DebuggerTools), typeof(Tools.DiagnosticsTools) };
+        var toolTypes = new[] { typeof(Tools.SolutionTools), typeof(Tools.DocumentTools), typeof(Tools.BuildTools), typeof(Tools.NavigationTools), typeof(Tools.DebuggerTools), typeof(Tools.DiagnosticsTools), typeof(Tools.WindowTools) };
 
         foreach (var toolType in toolTypes)
         {
@@ -163,4 +163,9 @@ public Task<ErrorListResult> GetErrorListAsync(string? severity = null, int maxR
     public Task<bool> WriteOutputPaneAsync(string paneIdentifier, string message, bool activate = false)
         => Proxy.WriteOutputPaneAsync(paneIdentifier, message, activate);
     public Task<List<OutputPaneInfo>> GetOutputPanesAsync() => Proxy.GetOutputPanesAsync();
+
+    public Task<List<WindowInfo>> GetWindowsAsync() => Proxy.GetWindowsAsync();
+    public Task<bool> ActivateWindowAsync(string caption) => Proxy.ActivateWindowAsync(caption);
+    public Task<bool> ShowToolWindowAsync(string name) => Proxy.ShowToolWindowAsync(name);
+    public Task<bool> HideToolWindowAsync(string caption) => Proxy.HideToolWindowAsync(caption);
 }
diff --git a/src/CodingWithCalvin.MCPServer.Server/Tools/WindowTools.cs b/src/CodingWithCalvin.MCPServer.Server/Tools/WindowTools.cs
new file mode 100644
index 0000000..fe39eac
--- /dev/null
+++ b/src/CodingWithCalvin.MCPServer.Server/Tools/WindowTools.cs
@@ -0,0 +1,88 @@
+using System.ComponentModel;
+using System.Text.Json;
+using System.Threading.Tasks;
+using ModelContextProtocol.Server;
+
+namespace CodingWithCalvin.MCPServer.Server.Tools;
+
+[McpServerToolType]
+public class WindowTools
+{
+    private static readonly string[] SupportedToolWindows =
+    [
+        "SolutionExplorer",
+        "ErrorList",
+        "Output",
+        "TeamExplorer",
+        "Terminal",
+        "TaskList",
+        "Properties",
+        "Toolbox",
+        "FindResults",
+        "Bookmarks",
+    ];
+
+    private readonly RpcClient _rpcClient;
+    private readonly JsonSerializerOptions _jsonOptions;
+
+    public WindowTools(RpcClient rpcClient)
+    {
+        _rpcClient = rpcClient;
+        _jsonOptions = new JsonSerializerOptions { WriteIndented = true };
+    }
+
+    [McpServerTool(Name = "window_list", ReadOnly = true)]
+    [Description("List all open windows in Visual Studio. Returns each window's caption, kind (Document or Tool), visibility, and GUID.")]
+    public async Task<string> GetWindowsAsync()
+    {
+        var windows = await _rpcClient.GetWindowsAsync();
+
+        if (windows.Count == 0)
+        {
+            return "No windows found";
+        }
+
+        return JsonSerializer.Serialize(windows, _jsonOptions);
+    }
+
+    [McpServerTool(Name = "window_activate", Destructive = false, Idempotent = true)]
+    [Description("Activate (bring to front and focus) a specific window by its caption. Use window_list to find available window captions.")]
+    public async Task<string> ActivateWindowAsync(
+        [Description("The caption/title of the window to activate. Case-insensitive.")]
+        string caption)
+    {
+        var success = await _rpcClient.ActivateWindowAsync(caption);
+        return success
+            ? $"Activated window: {caption}"
+            : $"Window not found: {caption}";
+    }
+
+    [McpServerTool(Name = "toolwindow_show", Destructive = false, Idempotent = true)]
+    [Description("Show a tool window by well-known name. Supported names: SolutionExplorer, ErrorList, Output, TeamExplorer, Terminal, TaskList, Properties, Toolbox, FindResults, Bookmarks.")]
+    public async Task<string> ShowToolWindowAsync(
+        [Description("Well-known tool window name (e.g., \"SolutionExplorer\", \"ErrorList\", \"Output\"). Case-insensitive.")]
+        string name)
+    {
+        var success = await _rpcClient.ShowToolWindowAsync(name);
+
+        if (success)
+        {
+            return $"Shown tool window: {name}";
+        }
+
+        var supported = string.Join(", ", SupportedToolWindows);
+        return $"Unknown tool window: {name}. Supported names: {supported}";
+    }
+
+    [McpServerTool(Name = "toolwindow_hide", Destructive = false, Idempotent = true)]
+    [Description("Hide (close) a tool window by its caption. Use window_list to find available window captions.")]
+    public async Task<string> HideToolWindowAsync(
+        [Description("The caption/title of the tool window to hide. Case-insensitive.")]
+        string caption)
+    {
+        var success = await _rpcClient.HideToolWindowAsync(caption);
+        return success
+            ? $"Hidden tool window: {caption}"
+            : $"Tool window not found: {caption}";
+    }
+}
diff --git a/src/CodingWithCalvin.MCPServer.Shared/Models/WindowModels.cs b/src/CodingWithCalvin.MCPServer.Shared/Models/WindowModels.cs
new file mode 100644
index 0000000..f797e65
--- /dev/null
+++ b/src/CodingWithCalvin.MCPServer.Shared/Models/WindowModels.cs
@@ -0,0 +1,9 @@
+namespace CodingWithCalvin.MCPServer.Shared.Models;
+
+public class WindowInfo
+{
+    public string Caption { get; set; } = string.Empty;
+    public string Kind { get; set; } = string.Empty;  // "Document" or "Tool"
+    public bool IsVisible { get; set; }
+    public string ObjectKind { get; set; } = string.Empty;  // Window GUID
+}
diff --git a/src/CodingWithCalvin.MCPServer.Shared/RpcContracts.cs b/src/CodingWithCalvin.MCPServer.Shared/RpcContracts.cs
index 6ffdaeb..317a3b4 100644
--- a/src/CodingWithCalvin.MCPServer.Shared/RpcContracts.cs
+++ b/src/CodingWithCalvin.MCPServer.Shared/RpcContracts.cs
@@ -67,6 +67,12 @@ public interface IVisualStudioRpc
     Task<OutputReadResult> ReadOutputPaneAsync(string paneIdentifier);
     Task<bool> WriteOutputPaneAsync(string paneIdentifier, string message, bool activate = false);
     Task<List<OutputPaneInfo>> GetOutputPanesAsync();
+
+    // Window management tools
+    Task<List<WindowInfo>> GetWindowsAsync();
+    Task<bool> ActivateWindowAsync(string caption);
+    Task<bool> ShowToolWindowAsync(string name);
+    Task<bool> HideToolWindowAsync(string caption);
 }
 
 /// <summary>
diff --git a/src/CodingWithCalvin.MCPServer/Services/IVisualStudioService.cs b/src/CodingWithCalvin.MCPServer/Services/IVisualStudioService.cs
index 2a925c4..548f4dd 100644
--- a/src/CodingWithCalvin.MCPServer/Services/IVisualStudioService.cs
+++ b/src/CodingWithCalvin.MCPServer/Services/IVisualStudioService.cs
@@ -62,4 +62,9 @@ public interface IVisualStudioService
     Task<OutputReadResult> ReadOutputPaneAsync(string paneIdentifier);
     Task<bool> WriteOutputPaneAsync(string paneIdentifier, string message, bool activate = false);
     Task<List<OutputPaneInfo>> GetOutputPanesAsync();
+
+    Task<List<WindowInfo>> GetWindowsAsync();
+    Task<bool> ActivateWindowAsync(string caption);
+    Task<bool> ShowToolWindowAsync(string name);
+    Task<bool> HideToolWindowAsync(string caption);
 }
diff --git a/src/CodingWithCalvin.MCPServer/Services/RpcServer.cs b/src/CodingWithCalvin.MCPServer/Services/RpcServer.cs
index 4ea4b5d..14d20be 100644
--- a/src/CodingWithCalvin.MCPServer/Services/RpcServer.cs
+++ b/src/CodingWithCalvin.MCPServer/Services/RpcServer.cs
@@ -221,4 +221,9 @@ public Task<ErrorListResult> GetErrorListAsync(string? severity = null, int maxR
     public Task<bool> WriteOutputPaneAsync(string paneIdentifier, string message, bool activate = false)
         => _vsService.WriteOutputPaneAsync(paneIdentifier, message, activate);
     public Task<List<OutputPaneInfo>> GetOutputPanesAsync() => _vsService.GetOutputPanesAsync();
+
+    public Task<List<WindowInfo>> GetWindowsAsync() => _vsService.GetWindowsAsync();
+    public Task<bool> ActivateWindowAsync(string caption) => _vsService.ActivateWindowAsync(caption);
+    public Task<bool> ShowToolWindowAsync(string name) => _vsService.ShowToolWindowAsync(name);
+    public Task<bool> HideToolWindowAsync(string caption) => _vsService.HideToolWindowAsync(caption);
 }
diff --git a/src/CodingWithCalvin.MCPServer/Services/VisualStudioService.cs b/src/CodingWithCalvin.MCPServer/Services/VisualStudioService.cs
index 5304b18..002a2ed 100644
--- a/src/CodingWithCalvin.MCPServer/Services/VisualStudioService.cs
+++ b/src/CodingWithCalvin.MCPServer/Services/VisualStudioService.cs
@@ -2166,4 +2166,153 @@ private bool IsWellKnownPane(Guid paneGuid)
                paneGuid == VSConstants.OutputWindowPaneGuid.DebugPane_guid ||
                paneGuid == VSConstants.OutputWindowPaneGuid.GeneralPane_guid;
     }
+
+    private static readonly Dictionary<string, string> ToolWindowCommands = new(StringComparer.OrdinalIgnoreCase)
+    {
+        ["SolutionExplorer"] = "View.SolutionExplorer",
+        ["ErrorList"] = "View.ErrorList",
+        ["Output"] = "View.Output",
+        ["TeamExplorer"] = "View.TeamExplorer",
+        ["Terminal"] = "View.Terminal",
+        ["TaskList"] = "View.TaskList",
+        ["Properties"] = "View.PropertiesWindow",
+        ["Toolbox"] = "View.Toolbox",
+        ["FindResults"] = "View.FindResults1",
+        ["Bookmarks"] = "View.BookmarkWindow",
+    };
+
+    public async Task<List<Shared.Models.WindowInfo>> GetWindowsAsync()
+    {
+        using var activity = VsixTelemetry.Tracer.StartActivity("GetWindows");
+        await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
+        var dte = await GetDteAsync();
+
+        try
+        {
+            var windows = new List<Shared.Models.WindowInfo>();
+
+            foreach (Window window in dte.Windows)
+            {
+                try
+                {
+                    windows.Add(new Shared.Models.WindowInfo
+                    {
+                        Caption = window.Caption,
+                        Kind = window.Document != null ? "Document" : "Tool",
+                        IsVisible = window.Visible,
+                        ObjectKind = window.ObjectKind ?? string.Empty,
+                    });
+                }
+                catch (Exception)
+                {
+                    // Some windows may not be accessible
+                }
+            }
+
+            return windows;
+        }
+        catch (Exception ex)
+        {
+            activity?.SetStatus(ActivityStatusCode.Error, ex.Message);
+            activity?.RecordException(ex);
+            return new List<Shared.Models.WindowInfo>();
+        }
+    }
+
+    public async Task<bool> ActivateWindowAsync(string caption)
+    {
+        using var activity = VsixTelemetry.Tracer.StartActivity("ActivateWindow");
+        await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
+        var dte = await GetDteAsync();
+
+        try
+        {
+            foreach (Window window in dte.Windows)
+            {
+                try
+                {
+                    if (string.Equals(window.Caption, caption, StringComparison.OrdinalIgnoreCase))
+                    {
+                        window.Activate();
+                        return true;
+                    }
+                }
+                catch (Exception)
+                {
+                    // Some windows may not be accessible
+                }
+            }
+
+            return false;
+        }
+        catch (Exception ex)
+        {
+            activity?.SetStatus(ActivityStatusCode.Error, ex.Message);
+            activity?.RecordException(ex);
+            return false;
+        }
+    }
+
+    public async Task<bool> ShowToolWindowAsync(string name)
+    {
+        using var activity = VsixTelemetry.Tracer.StartActivity("ShowToolWindow");
+        await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
+        var dte = await GetDteAsync();
+
+        try
+        {
+            if (!ToolWindowCommands.TryGetValue(name, out var command))
+            {
+                return false;
+            }
+
+            dte.ExecuteCommand(command);
+            return true;
+        }
+        catch (Exception ex)
+        {
+            activity?.SetStatus(ActivityStatusCode.Error, ex.Message);
+            activity?.RecordException(ex);
+            return false;
+        }
+    }
+
+    public async Task<bool> HideToolWindowAsync(string caption)
+    {
+        using var activity = VsixTelemetry.Tracer.StartActivity("HideToolWindow");
+        await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
+        var dte = await GetDteAsync();
+
+        try
+        {
+            foreach (Window window in dte.Windows)
+            {
+                try
+                {
+                    if (string.Equals(window.Caption, caption, StringComparison.OrdinalIgnoreCase))
+                    {
+                        window.Close();
+                        return true;
+                    }
+                }
+                catch (Exception)
+                {
+                    // Some windows may not be accessible
+                }
+            }
+
+            return false;
+        }
+        catch (Exception ex)
+        {
+            activity?.SetStatus(ActivityStatusCode.Error, ex.Message);
+            activity?.RecordException(ex);
+            return false;
+        }
+    }
+
+    public static IReadOnlyCollection<string> GetSupportedToolWindowNames()
+    {
+        return ToolWindowCommands.Keys;
+    }
 }