diff --git a/src/modules/cmdpal/.wt.json b/src/modules/cmdpal/.wt.json
index 230329e876..69cd2c79cc 100644
--- a/src/modules/cmdpal/.wt.json
+++ b/src/modules/cmdpal/.wt.json
@@ -26,6 +26,11 @@
             "input": "pushd .\\ExtensionTemplate\\ ; git archive -o ..\\Microsoft.CmdPal.UI.ViewModels\\Assets\\template.zip HEAD -- .\\TemplateCmdPalExtension\\ ; popd",
             "name": "Update template project",
             "description": "zips up the ExtensionTemplate into our assets. Run this in the cmdpal/ directory."
+        },
+        {
+            "input": "pwsh -c .\\clean-sdk.ps1",
+            "name": "Delete old extensions output",
+            "description": "Delete old extensions output directory.\r\nUse this after regenerating the interface, otherwise it will not pass fast up to date checks."
         }
     ]
 }
diff --git a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ArgumentItemViewModel.cs b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ArgumentItemViewModel.cs
index acaeab5a48..43f096aa08 100644
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ArgumentItemViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ArgumentItemViewModel.cs
@@ -21,6 +21,11 @@ public partial class ArgumentItemViewModel : ExtensionObjectViewModel
 
     public bool Required { get; private set; }
 
+    private string ModelDisplayName { get; set; } = string.Empty;
+
+    public string DisplayName => string.IsNullOrEmpty(ModelDisplayName) ? Name : ModelDisplayName;
+
+    // TODO! This should be an ExtensionObject<object> since it's out-of-proc
     public object? Value
     {
         get; set
@@ -48,6 +53,7 @@ public partial class ArgumentItemViewModel : ExtensionObjectViewModel
         Name = model.Name;
         Required = model.Required;
         Value = model.Value;
+        ModelDisplayName = model.DisplayName;
 
         // Register for property changes
         model.PropChanged += Model_PropChanged;
@@ -76,18 +82,49 @@ public partial class ArgumentItemViewModel : ExtensionObjectViewModel
         switch (propertyName)
         {
             case nameof(ICommandArgument.Type):
+                if (model.Type == Type)
+                {
+                    return;
+                }
+
                 Type = model.Type;
                 break;
             case nameof(ICommandArgument.Name):
+                if (model.Name == Name)
+                {
+                    return;
+                }
+
                 Name = model.Name;
+                UpdateProperty(nameof(DisplayName));
                 break;
             case nameof(ICommandArgument.Required):
+                if (model.Required == Required)
+                {
+                    return;
+                }
+
                 Required = model.Required;
                 break;
             case nameof(ICommandArgument.Value):
+                if (model.Value == Value)
+                {
+                    return;
+                }
+
                 Value = model.Value;
                 break;
+            case nameof(ICommandArgument.DisplayName):
+                if (model.DisplayName == ModelDisplayName)
+                {
+                    return;
+                }
+
+                ModelDisplayName = model.DisplayName;
+                break;
         }
+
+        UpdateProperty(propertyName);
     }
 
     private void SafeSetValue(object? value)
diff --git a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/BuiltInsCommandProvider.cs b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/BuiltInsCommandProvider.cs
index 501156f745..ff72d2cea4 100644
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/BuiltInsCommandProvider.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/BuiltInsCommandProvider.cs
@@ -80,6 +80,10 @@ public partial class BuiltInsCommandProvider : CommandProvider
 
         public object? Value { get; set; }
 
+        public string DisplayName => string.Empty;
+
+        public IIconInfo? Icon => null;
+
         public void ShowPicker(ulong hostHwnd)
         {
         }
diff --git a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/SearchBar.xaml.cs b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/SearchBar.xaml.cs
index 8729002faa..c6569519c7 100644
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/SearchBar.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/SearchBar.xaml.cs
@@ -360,6 +360,13 @@ public sealed partial class SearchBar : UserControl,
                     {
                         param.OpenPicker();
                     };
+                    button.SetBinding(Button.ContentProperty, new Microsoft.UI.Xaml.Data.Binding
+                    {
+                        Source = param,
+                        Path = new PropertyPath("DisplayName"),
+                        Mode = Microsoft.UI.Xaml.Data.BindingMode.OneWay,
+                        UpdateSourceTrigger = Microsoft.UI.Xaml.Data.UpdateSourceTrigger.PropertyChanged,
+                    });
                     ParametersPanel.Children.Add(button);
                 }
             }
diff --git a/src/modules/cmdpal/doc/initial-sdk-spec/initial-sdk-spec.md b/src/modules/cmdpal/doc/initial-sdk-spec/initial-sdk-spec.md
index 4a22bdfe21..17fe83d579 100644
--- a/src/modules/cmdpal/doc/initial-sdk-spec/initial-sdk-spec.md
+++ b/src/modules/cmdpal/doc/initial-sdk-spec/initial-sdk-spec.md
@@ -2174,6 +2174,8 @@ interface ICommandArgument requires INotifyPropChanged
     Boolean Required{ get; };
 
     Object Value { get; set; };
+    String DisplayName { get; };
+    IIconInfo Icon { get; };
 
     void ShowPicker(UInt64 hostHwnd);
     // todo
diff --git a/src/modules/cmdpal/ext/MIcrosoft.CmdPal.Ext.Actions/Microsoft.CmdPal.Ext.Actions.csproj b/src/modules/cmdpal/ext/MIcrosoft.CmdPal.Ext.Actions/Microsoft.CmdPal.Ext.Actions.csproj
index 40c3cca9f2..1073f17349 100644
--- a/src/modules/cmdpal/ext/MIcrosoft.CmdPal.Ext.Actions/Microsoft.CmdPal.Ext.Actions.csproj
+++ b/src/modules/cmdpal/ext/MIcrosoft.CmdPal.Ext.Actions/Microsoft.CmdPal.Ext.Actions.csproj
@@ -4,6 +4,7 @@
   <PropertyGroup>
     <RootNamespace>Microsoft.CmdPal.Ext.Bookmarks</RootNamespace>
     <Nullable>enable</Nullable>
+    <LangVersion>preview</LangVersion>
     <OutputPath>$(SolutionDir)$(Platform)\$(Configuration)\WinUI3Apps\CmdPal</OutputPath>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
diff --git a/src/modules/cmdpal/ext/MIcrosoft.CmdPal.Ext.Actions/Pages/ActionsTestPage.cs b/src/modules/cmdpal/ext/MIcrosoft.CmdPal.Ext.Actions/Pages/ActionsTestPage.cs
index bcc141a34c..a66d19e48a 100644
--- a/src/modules/cmdpal/ext/MIcrosoft.CmdPal.Ext.Actions/Pages/ActionsTestPage.cs
+++ b/src/modules/cmdpal/ext/MIcrosoft.CmdPal.Ext.Actions/Pages/ActionsTestPage.cs
@@ -4,6 +4,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.CommandPalette.Extensions;
@@ -73,13 +74,36 @@ internal sealed partial class ActionsTestPage : ListPage
 [System.Diagnostics.CodeAnalysis.SuppressMessage("StyleCop.CSharp.MaintainabilityRules", "SA1402:File may only contain a single type", Justification = "meh")]
 public partial class CommandParameter : BaseObservable, ICommandArgument
 {
-    public string Name { get; set; }
+    public virtual string Name { get; set; }
 
-    public bool Required { get; set; }
+    public virtual bool Required { get; set; }
 
-    public ParameterType Type { get; set; }
+    public virtual ParameterType Type { get; set; }
 
-    public object? Value { get; set; }
+    public virtual object? Value
+    {
+        get; set
+        {
+            if (field != value)
+            {
+                field = value;
+                OnPropertyChanged(nameof(Value));
+                OnPropertyChanged(nameof(DisplayName));
+            }
+        }
+    }
+
+    public virtual string? DisplayName => Value?.ToString() ?? string.Empty;
+
+    public virtual IIconInfo? Icon
+    {
+        get => field;
+        set
+        {
+            field = value;
+            OnPropertyChanged(nameof(Icon));
+        }
+    }
 
     public virtual void ShowPicker(ulong hostHwnd)
     {
@@ -145,8 +169,12 @@ public partial class DoActionCommand : InvokableWithParams
                 ActionInvocationResult.Success => MessageState.Success,
                 _ => MessageState.Error,
             };
-            var text = $"{c.Result.ToString()}: tion{c.ExtendedError}";
-            var resultToast = new ToastStatusMessage(text);
+            var text = c.Result switch
+            {
+                ActionInvocationResult.Success => $"{c.Result.ToString()}",
+                _ => $"{c.Result.ToString()}: {c.ExtendedError}",
+            };
+            var resultToast = new ToastStatusMessage(new StatusMessage() { Message = text, State = statusType });
             resultToast.Show();
         });
 
@@ -196,6 +224,8 @@ public partial class DoActionCommand : InvokableWithParams
 [System.Diagnostics.CodeAnalysis.SuppressMessage("StyleCop.CSharp.MaintainabilityRules", "SA1402:File may only contain a single type", Justification = "meh")]
 public partial class ImageParameter : CommandParameter
 {
+    private string? _filePath;
+
     public ImageParameter(string name = "", bool required = true)
         : base(name, required, ParameterType.Custom)
     {
@@ -225,7 +255,11 @@ public partial class ImageParameter : CommandParameter
                 var file = await picker.PickSingleFileAsync();
                 if (file != null)
                 {
-                    Value = file.Path;
+                    _filePath = file.Path;
+                    Value = _filePath;
+                    Icon = new IconInfo(_filePath);
+
+                    // TODO! update display name
                 }
             }
             catch (Exception ex)
@@ -235,4 +269,9 @@ public partial class ImageParameter : CommandParameter
             }
         });
     }
+
+    public override string? DisplayName
+    {
+        get { return string.IsNullOrEmpty(_filePath) ? null : Path.GetFileName(_filePath); }
+    }
 }
diff --git a/src/modules/cmdpal/extensionsdk/Microsoft.CommandPalette.Extensions/Microsoft.CommandPalette.Extensions.idl b/src/modules/cmdpal/extensionsdk/Microsoft.CommandPalette.Extensions/Microsoft.CommandPalette.Extensions.idl
index c132289387..83fe021a28 100644
--- a/src/modules/cmdpal/extensionsdk/Microsoft.CommandPalette.Extensions/Microsoft.CommandPalette.Extensions.idl
+++ b/src/modules/cmdpal/extensionsdk/Microsoft.CommandPalette.Extensions/Microsoft.CommandPalette.Extensions.idl
@@ -257,6 +257,8 @@ namespace Microsoft.CommandPalette.Extensions
         Boolean Required{ get; };
     
         Object Value { get; set; };
+        String DisplayName { get; };
+        IIconInfo Icon { get; };
     
         void ShowPicker(UInt64 hostHwnd);
         // todo