diff --git a/embedded-assistant/c-sharp-wpf/.env.example b/embedded-assistant/c-sharp-wpf/.env.example
new file mode 100644
index 0000000..86751c7
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/.env.example
@@ -0,0 +1,5 @@
+CORTI_ENVIRONMENT=eu
+CORTI_TENANT_NAME=your-tenant
+CORTI_CLIENT_ID=assistant
+CORTI_USER_EMAIL=user@example.com
+CORTI_USER_PASSWORD=replace-me
diff --git a/embedded-assistant/c-sharp-wpf/.gitignore b/embedded-assistant/c-sharp-wpf/.gitignore
new file mode 100644
index 0000000..184d576
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/.gitignore
@@ -0,0 +1,10 @@
+.env
+.dotnet/
+bin/
+obj/
+artifacts/
+.vs/
+*.user
+*.csproj.user
+WebAssets/dist/
+WebAssets/node_modules/
diff --git a/embedded-assistant/c-sharp-wpf/App.xaml b/embedded-assistant/c-sharp-wpf/App.xaml
new file mode 100644
index 0000000..a9c5057
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/App.xaml
@@ -0,0 +1,9 @@
+<Application x:Class="CortiAssistantApp.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:CortiAssistantApp"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>
diff --git a/embedded-assistant/c-sharp-wpf/App.xaml.cs b/embedded-assistant/c-sharp-wpf/App.xaml.cs
new file mode 100644
index 0000000..03e005a
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/App.xaml.cs
@@ -0,0 +1,14 @@
+using System.Configuration;
+using System.Data;
+using System.Windows;
+
+namespace CortiAssistantApp
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+
+}
diff --git a/embedded-assistant/c-sharp-wpf/AssemblyInfo.cs b/embedded-assistant/c-sharp-wpf/AssemblyInfo.cs
new file mode 100644
index 0000000..b0ec827
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/AssemblyInfo.cs
@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None,            //where theme specific resource dictionaries are located
+                                                //(used if a resource is not found in the page,
+                                                // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly   //where the generic resource dictionary is located
+                                                //(used if a resource is not found in the page,
+                                                // app, or any theme specific resource dictionaries)
+)]
diff --git a/embedded-assistant/c-sharp-wpf/CortiAssistantApp.csproj b/embedded-assistant/c-sharp-wpf/CortiAssistantApp.csproj
new file mode 100644
index 0000000..9762aaf
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/CortiAssistantApp.csproj
@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net10.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+  <Target Name="ValidateWebAssets" BeforeTargets="Build">
+    <Error Condition="!Exists('WebAssets\dist\index.html')"
+           Text="Missing built WebAssets. Run 'npm install' and 'npm run build' in embedded-assistant/c-sharp-wpf/WebAssets before building the WPF app." />
+  </Target>
+
+  <Target Name="CopyWebAssets" AfterTargets="Build">
+    <ItemGroup>
+      <WebAssetFiles Include="WebAssets\dist\**\*" />
+    </ItemGroup>
+    <Copy SourceFiles="@(WebAssetFiles)" DestinationFiles="@(WebAssetFiles->'$(OutDir)WebAssets\%(RecursiveDir)%(Filename)%(Extension)')" />
+  </Target>
+
+  <ItemGroup>
+    <PackageReference Include="DotNetEnv" Version="3.1.1" />
+    <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.3856.49" />
+  </ItemGroup>
+
+</Project>
diff --git a/embedded-assistant/c-sharp-wpf/CortiAssistantApp.slnx b/embedded-assistant/c-sharp-wpf/CortiAssistantApp.slnx
new file mode 100644
index 0000000..8429147
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/CortiAssistantApp.slnx
@@ -0,0 +1,3 @@
+<Solution>
+  <Project Path="CortiAssistantApp.csproj" />
+</Solution>
diff --git a/embedded-assistant/c-sharp-wpf/MainWindow.xaml b/embedded-assistant/c-sharp-wpf/MainWindow.xaml
new file mode 100644
index 0000000..aaade53
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/MainWindow.xaml
@@ -0,0 +1,23 @@
+<Window x:Class="CortiAssistantApp.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:wv2="clr-namespace:Microsoft.Web.WebView2.Wpf;assembly=Microsoft.Web.WebView2.Wpf"
+        Title="Corti Assistant" Height="800" Width="1200">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+
+        <Button x:Name="AuthButton"
+                Grid.Row="0"
+                Content="Authenticate"
+                Click="AuthButton_Click"
+                Margin="10"
+                Padding="10,5"
+                IsEnabled="False"/>
+
+        <wv2:WebView2 x:Name="CortiWebView"
+                      Grid.Row="1"/>
+    </Grid>
+</Window>
diff --git a/embedded-assistant/c-sharp-wpf/MainWindow.xaml.cs b/embedded-assistant/c-sharp-wpf/MainWindow.xaml.cs
new file mode 100644
index 0000000..0eec5dd
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/MainWindow.xaml.cs
@@ -0,0 +1,284 @@
+using CortiAssistantApp.Services;
+using Microsoft.Web.WebView2.Core;
+using System.IO;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using System.Windows;
+
+namespace CortiAssistantApp
+{
+    public partial class MainWindow : Window
+    {
+        private const string LocalHostOrigin = "https://corti.local";
+
+        private readonly CortiSettings _settings = null!;
+        private readonly CortiAuthService _authService = null!;
+        private readonly JsonSerializerOptions _jsonOptions = new()
+        {
+            PropertyNameCaseInsensitive = true,
+        };
+
+        private AuthTokens _authTokens = null!;
+        private TaskCompletionSource<bool>? _bootstrapPending;
+        private BootstrapMessage? _pendingBootstrapMessage;
+
+        public MainWindow()
+        {
+            InitializeComponent();
+
+            try
+            {
+                _settings = CortiSettings.LoadFromProjectEnv();
+                _authService = new CortiAuthService(_settings);
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Configuration Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                Close();
+                return;
+            }
+
+            Loaded += MainWindow_Loaded;
+        }
+
+        private async void MainWindow_Loaded(object sender, RoutedEventArgs e)
+        {
+            Loaded -= MainWindow_Loaded;
+            await InitializeWebViewAsync();
+        }
+
+        private async Task InitializeWebViewAsync()
+        {
+            try
+            {
+                var userDataFolder = Path.Combine(
+                    Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+                    "CortiAssistantApp",
+                    "WebView2"
+                );
+
+                var environment = await CoreWebView2Environment.CreateAsync(
+                    null,
+                    userDataFolder,
+                    new CoreWebView2EnvironmentOptions
+                    {
+                        AdditionalBrowserArguments = "--enable-features=WebRTC " +
+                                                    "--enable-media-stream " +
+                                                    "--autoplay-policy=no-user-gesture-required"
+                    }
+                );
+
+                await CortiWebView.EnsureCoreWebView2Async(environment);
+
+                var webAssetsPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "WebAssets");
+                var webAssetsIndexPath = Path.Combine(webAssetsPath, "index.html");
+                if (!File.Exists(webAssetsIndexPath))
+                {
+                    throw new FileNotFoundException(
+                        "Built WebAssets were not found. Run 'npm install' and 'npm run build' in the WebAssets folder, then rebuild the WPF app.",
+                        webAssetsIndexPath
+                    );
+                }
+
+                CortiWebView.CoreWebView2.SetVirtualHostNameToFolderMapping(
+                    "corti.local",
+                    webAssetsPath,
+                    CoreWebView2HostResourceAccessKind.Allow
+                );
+
+                CortiWebView.CoreWebView2.Settings.AreDevToolsEnabled =
+#if DEBUG
+                        true;
+#else
+                        false;
+#endif
+                CortiWebView.CoreWebView2.Settings.AreDefaultScriptDialogsEnabled = false;
+                CortiWebView.CoreWebView2.Settings.IsWebMessageEnabled = true;
+                CortiWebView.CoreWebView2.Settings.AreDefaultContextMenusEnabled = false;
+                CortiWebView.CoreWebView2.Settings.IsStatusBarEnabled = false;
+
+                CortiWebView.CoreWebView2.PermissionRequested += CoreWebView2_PermissionRequested;
+                CortiWebView.CoreWebView2.WebMessageReceived += WebView_WebMessageReceived;
+
+                AuthButton.IsEnabled = true;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "WebView Initialization Error", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
+        }
+
+        private async void AuthButton_Click(object sender, RoutedEventArgs e)
+        {
+            try
+            {
+                AuthButton.IsEnabled = false;
+                AuthButton.Content = "Authenticating...";
+
+                _authTokens = await _authService.AuthenticateAsync();
+                await LoadCortiAssistant();
+
+                AuthButton.Visibility = Visibility.Collapsed;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show($"Authentication failed: {ex.Message}", "Error",
+                    MessageBoxButton.OK, MessageBoxImage.Error);
+                AuthButton.IsEnabled = true;
+                AuthButton.Content = "Authenticate";
+            }
+        }
+
+        private async Task LoadCortiAssistant()
+        {
+            if (CortiWebView.CoreWebView2 is null)
+            {
+                throw new InvalidOperationException("WebView2 is not ready yet.");
+            }
+
+            var navigationCompleted = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
+            _bootstrapPending = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
+            _pendingBootstrapMessage = new BootstrapMessage
+            {
+                AccessToken = _authTokens.AccessToken,
+                RefreshToken = _authTokens.RefreshToken,
+                IdToken = _authTokens.IdToken,
+                TokenType = _authTokens.JsonTokenType,
+                ExpiresIn = _authTokens.ExpiresIn,
+                BaseUrl = $"https://assistant.{_settings.EnvironmentName}.corti.app"
+            };
+
+            void OnNavigationCompleted(object? sender, CoreWebView2NavigationCompletedEventArgs e)
+            {
+                navigationCompleted.TrySetResult(e.IsSuccess);
+            }
+
+            try
+            {
+                CortiWebView.CoreWebView2.NavigationCompleted += OnNavigationCompleted;
+                CortiWebView.CoreWebView2.Navigate("https://corti.local/index.html");
+
+                var success = await navigationCompleted.Task;
+                if (!success)
+                {
+                    throw new Exception("Failed to load the Corti Assistant page.");
+                }
+
+                var bootstrapCompleted = await Task.WhenAny(_bootstrapPending.Task, Task.Delay(TimeSpan.FromSeconds(10)));
+                if (bootstrapCompleted != _bootstrapPending.Task || !_bootstrapPending.Task.Result)
+                {
+                    throw new TimeoutException("Timed out waiting for the embedded page to request bootstrap data.");
+                }
+            }
+            finally
+            {
+                CortiWebView.CoreWebView2.NavigationCompleted -= OnNavigationCompleted;
+                _pendingBootstrapMessage = null;
+                _bootstrapPending = null;
+            }
+        }
+
+        private void CoreWebView2_PermissionRequested(object? sender, CoreWebView2PermissionRequestedEventArgs args)
+        {
+            if (args.PermissionKind == CoreWebView2PermissionKind.Microphone &&
+                IsTrustedMicrophoneOrigin(args.Uri))
+            {
+                args.State = CoreWebView2PermissionState.Allow;
+                return;
+            }
+
+            args.State = CoreWebView2PermissionState.Deny;
+        }
+
+        private bool IsTrustedMicrophoneOrigin(string? uri)
+        {
+            if (string.IsNullOrWhiteSpace(uri))
+            {
+                return false;
+            }
+
+            if (!Uri.TryCreate(uri, UriKind.Absolute, out var requestUri))
+            {
+                return false;
+            }
+
+            var origin = requestUri.GetLeftPart(UriPartial.Authority);
+            if (string.Equals(origin, LocalHostOrigin, StringComparison.OrdinalIgnoreCase))
+            {
+                return true;
+            }
+
+            var assistantOrigin = $"https://assistant.{_settings.EnvironmentName}.corti.app";
+            return string.Equals(origin, assistantOrigin, StringComparison.OrdinalIgnoreCase);
+        }
+
+        private void WebView_WebMessageReceived(object? sender, CoreWebView2WebMessageReceivedEventArgs e)
+        {
+            var message = e.TryGetWebMessageAsString();
+            if (string.IsNullOrWhiteSpace(message))
+            {
+                return;
+            }
+
+            var eventData = JsonSerializer.Deserialize<HostMessage>(message, _jsonOptions);
+            if (eventData is not null)
+            {
+                HandleHostMessage(eventData);
+            }
+        }
+
+        private void HandleHostMessage(HostMessage eventData)
+        {
+            switch (eventData.Type)
+            {
+                case "host.ready":
+                    if (CortiWebView.CoreWebView2 is not null && _pendingBootstrapMessage is not null)
+                    {
+                        CortiWebView.CoreWebView2.PostWebMessageAsJson(
+                            JsonSerializer.Serialize(_pendingBootstrapMessage, _jsonOptions)
+                        );
+                        _bootstrapPending?.TrySetResult(true);
+                    }
+                    break;
+                case "session.started":
+                    break;
+                case "error":
+                    var errorMessage = eventData.Payload.ValueKind == JsonValueKind.String
+                        ? eventData.Payload.GetString()
+                        : eventData.Payload.GetRawText();
+                    MessageBox.Show($"Error: {errorMessage}", "Assistant Error");
+                    break;
+            }
+        }
+
+        private sealed class HostMessage
+        {
+            [JsonPropertyName("type")]
+            public string Type { get; set; } = string.Empty;
+
+            [JsonPropertyName("payload")]
+            public JsonElement Payload { get; set; }
+        }
+
+        private sealed class BootstrapMessage
+        {
+            [JsonPropertyName("access_token")]
+            public string AccessToken { get; set; } = string.Empty;
+
+            [JsonPropertyName("refresh_token")]
+            public string RefreshToken { get; set; } = string.Empty;
+
+            [JsonPropertyName("id_token")]
+            public string IdToken { get; set; } = string.Empty;
+
+            [JsonPropertyName("token_type")]
+            public string TokenType { get; set; } = string.Empty;
+
+            [JsonPropertyName("expires_in")]
+            public int ExpiresIn { get; set; }
+
+            [JsonPropertyName("baseUrl")]
+            public string BaseUrl { get; set; } = string.Empty;
+        }
+    }
+}
diff --git a/embedded-assistant/c-sharp-wpf/README.md b/embedded-assistant/c-sharp-wpf/README.md
new file mode 100644
index 0000000..34fed55
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/README.md
@@ -0,0 +1,78 @@
+# Corti Embedded Assistant WPF Example
+
+This example shows how to host `@corti/embedded-web` inside a WPF application using WebView2.
+
+The flow mirrors the vanilla TypeScript example:
+
+- load the embedded assistant
+- authenticate with Corti
+- create an interaction
+- navigate to the session
+- surface events and errors back to the host app
+
+## Prerequisites
+
+- .NET 10 SDK
+- Node.js LTS
+- WebView2 Runtime installed on Windows
+
+## Configuration
+
+This example uses a project-local `.env` file loaded with `DotNetEnv`.
+
+1. Copy `.env.example` to `.env`
+2. Fill in the values for your Corti environment
+
+Required keys:
+
+```env
+CORTI_ENVIRONMENT=
+CORTI_TENANT_NAME=
+CORTI_CLIENT_ID=
+CORTI_USER_EMAIL=
+CORTI_USER_PASSWORD=
+```
+
+## Run
+
+Build the frontend:
+
+```powershell
+cd WebAssets
+npm install
+npm run build
+cd ..
+```
+
+Run the WPF app:
+
+```powershell
+dotnet run
+```
+
+The .NET build fails fast if `WebAssets/dist` has not been built yet.
+
+## Expected Behavior
+
+After clicking `Authenticate`, the app should:
+
+- request tokens from Corti auth
+- load the embedded assistant in WebView2
+- create an interaction
+- navigate to the new session
+
+The Authenticate button stays disabled until WebView2 is ready. Microphone permission is granted only for the trusted assistant origins used by the sample.
+DevTools are enabled only in Debug builds.
+
+## Troubleshooting
+
+- Missing `.env`:
+  Create `.env` from `.env.example` in the project root.
+- Missing config keys:
+  The app will fail fast and list the required keys.
+- Missing built frontend:
+  Run `npm install` and `npm run build` in `WebAssets` before running `dotnet run`.
+- Frontend changes not showing up:
+  Rebuild `WebAssets` before running the WPF app.
+- Session crashes after navigation:
+  Verify your `.env` values and rebuild the frontend before retrying.
diff --git a/embedded-assistant/c-sharp-wpf/Services/CortiAuthService.cs b/embedded-assistant/c-sharp-wpf/Services/CortiAuthService.cs
new file mode 100644
index 0000000..ea2e3b7
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/Services/CortiAuthService.cs
@@ -0,0 +1,84 @@
+using System.Net.Http;
+using System.Text.Json;
+
+namespace CortiAssistantApp.Services
+{
+    internal sealed class CortiAuthService
+    {
+        private readonly CortiSettings _settings;
+        private readonly HttpClient _httpClient;
+
+        public CortiAuthService(CortiSettings settings)
+        {
+            _settings = settings;
+            _httpClient = new HttpClient();
+        }
+
+        public string GetAuthUrl()
+        {
+            return $"https://auth.{_settings.EnvironmentName}.corti.app/realms/{_settings.TenantName}/protocol/openid-connect";
+        }
+
+        public async Task<AuthTokens> AuthenticateAsync()
+        {
+            var tokenUrl = $"{GetAuthUrl()}/token";
+
+            var content = new FormUrlEncodedContent(new[]
+            {
+                new KeyValuePair<string, string>("grant_type", "password"),
+                new KeyValuePair<string, string>("client_id", _settings.ClientId),
+                new KeyValuePair<string, string>("username", _settings.UserEmail),
+                new KeyValuePair<string, string>("password", _settings.UserPassword),
+                new KeyValuePair<string, string>("scope", "openid")
+            });
+
+            var response = await _httpClient.PostAsync(tokenUrl, content);
+            var responseBody = await response.Content.ReadAsStringAsync();
+
+            if (!response.IsSuccessStatusCode)
+            {
+                throw new Exception($"Authentication failed: {responseBody}");
+            }
+
+            var tokenResponse = JsonSerializer.Deserialize<TokenResponse>(
+                responseBody,
+                new JsonSerializerOptions { PropertyNameCaseInsensitive = true }
+            );
+
+            if (tokenResponse is null ||
+                string.IsNullOrWhiteSpace(tokenResponse.access_token) ||
+                string.IsNullOrWhiteSpace(tokenResponse.refresh_token) ||
+                string.IsNullOrWhiteSpace(tokenResponse.token_type))
+            {
+                throw new Exception("Authentication failed: token response was missing required fields.");
+            }
+
+            return new AuthTokens
+            {
+                AccessToken = tokenResponse.access_token,
+                RefreshToken = tokenResponse.refresh_token,
+                IdToken = tokenResponse.id_token,
+                JsonTokenType = tokenResponse.token_type,
+                ExpiresIn = tokenResponse.expires_in,
+            };
+        }
+
+        private sealed class TokenResponse
+        {
+            public string access_token { get; set; } = string.Empty;
+            public string refresh_token { get; set; } = string.Empty;
+            public string id_token { get; set; } = string.Empty;
+            public string token_type { get; set; } = string.Empty;
+            public int expires_in { get; set; }
+        }
+    }
+
+    public sealed class AuthTokens
+    {
+        public string AccessToken { get; set; } = string.Empty;
+        public string RefreshToken { get; set; } = string.Empty;
+        public string IdToken { get; set; } = string.Empty;
+        public string JsonTokenType { get; set; } = string.Empty;
+        public int ExpiresIn { get; set; }
+    }
+}
diff --git a/embedded-assistant/c-sharp-wpf/Services/CortiSettings.cs b/embedded-assistant/c-sharp-wpf/Services/CortiSettings.cs
new file mode 100644
index 0000000..f48ea4b
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/Services/CortiSettings.cs
@@ -0,0 +1,104 @@
+using DotNetEnv;
+using System.IO;
+
+namespace CortiAssistantApp.Services
+{
+    internal sealed class CortiSettings
+    {
+        public string EnvironmentName { get; }
+        public string TenantName { get; }
+        public string ClientId { get; }
+        public string UserEmail { get; }
+        public string UserPassword { get; }
+
+        private CortiSettings(
+            string environmentName,
+            string tenantName,
+            string clientId,
+            string userEmail,
+            string userPassword
+        )
+        {
+            EnvironmentName = environmentName;
+            TenantName = tenantName;
+            ClientId = clientId;
+            UserEmail = userEmail;
+            UserPassword = userPassword;
+        }
+
+        public static CortiSettings LoadFromProjectEnv()
+        {
+            var envPath = FindEnvFile();
+            if (envPath is null)
+            {
+                throw new InvalidOperationException(
+                    "Missing .env file in the project directory. Copy .env.example to .env in the project root and fill in the Corti settings."
+                );
+            }
+
+            Env.Load(envPath);
+
+            var missingKeys = new List<string>();
+            var environmentName = ReadRequired("CORTI_ENVIRONMENT", missingKeys);
+            var tenantName = ReadRequired("CORTI_TENANT_NAME", missingKeys);
+            var clientId = ReadRequired("CORTI_CLIENT_ID", missingKeys);
+            var userEmail = ReadRequired("CORTI_USER_EMAIL", missingKeys);
+            var userPassword = ReadRequired("CORTI_USER_PASSWORD", missingKeys);
+
+            if (missingKeys.Count > 0)
+            {
+                throw new InvalidOperationException(
+                    $"Missing required .env keys: {string.Join(", ", missingKeys.OrderBy(key => key))}"
+                );
+            }
+
+            return new CortiSettings(
+                environmentName,
+                tenantName,
+                clientId,
+                userEmail,
+                userPassword
+            );
+        }
+
+        private static string ReadRequired(string key, ICollection<string> missingKeys)
+        {
+            var value = Environment.GetEnvironmentVariable(key);
+            if (string.IsNullOrWhiteSpace(value))
+            {
+                missingKeys.Add(key);
+                return string.Empty;
+            }
+
+            return value;
+        }
+
+        private static string? FindEnvFile()
+        {
+            var candidateRoots = new[]
+            {
+                Directory.GetCurrentDirectory(),
+                AppContext.BaseDirectory
+            }
+            .Where(path => !string.IsNullOrWhiteSpace(path))
+            .Distinct(StringComparer.OrdinalIgnoreCase);
+
+            foreach (var root in candidateRoots)
+            {
+                var current = new DirectoryInfo(root);
+                while (current is not null)
+                {
+                    var envPath = Path.Combine(current.FullName, ".env");
+                    if (File.Exists(envPath))
+                    {
+                        return envPath;
+                    }
+
+                    current = current.Parent;
+                }
+            }
+
+            return null;
+        }
+    }
+}
diff --git a/embedded-assistant/c-sharp-wpf/WebAssets/README.md b/embedded-assistant/c-sharp-wpf/WebAssets/README.md
new file mode 100644
index 0000000..457debb
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/WebAssets/README.md
@@ -0,0 +1,12 @@
+# WebAssets
+
+The frontend bootstrap for this example lives here.
+
+Most setup and run instructions are documented in the parent directory, which is the base of the application [README](../README.md). Use this folder when you need to rebuild the embedded web shell:
+
+```powershell
+npm install
+npm run build
+```
+
+The embedded web shell needs to be built before you run the C# application to ensure the build artifacts are copied over.
diff --git a/embedded-assistant/c-sharp-wpf/WebAssets/index.html b/embedded-assistant/c-sharp-wpf/WebAssets/index.html
new file mode 100644
index 0000000..976e910
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/WebAssets/index.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Corti Assistant WPF Example</title>
+    <style>
+        body {
+            margin: 0;
+            padding: 0;
+            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
+        }
+
+        #status {
+            padding: 12px;
+            text-align: center;
+            font-weight: 500;
+            background: #e3f2fd;
+            color: #1976d2;
+        }
+
+        corti-embedded {
+            display: block;
+            width: 100%;
+            height: calc(100vh - 40px);
+        }
+    </style>
+</head>
+<body>
+    <div id="status">Initializing...</div>
+    <corti-embedded id="assistant"></corti-embedded>
+    <script type="module" src="/src/main.ts"></script>
+</body>
+</html>
diff --git a/embedded-assistant/c-sharp-wpf/WebAssets/package-lock.json b/embedded-assistant/c-sharp-wpf/WebAssets/package-lock.json
new file mode 100644
index 0000000..70a48fe
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/WebAssets/package-lock.json
@@ -0,0 +1,1006 @@
+{
+  "name": "webassets",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "webassets",
+      "version": "1.0.0",
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+        "@corti/embedded-web": "^0.1.1"
+      },
+      "devDependencies": {
+        "vite": "^8.0.1"
+      }
+    },
+    "node_modules/@corti/embedded-web": {
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+      "license": "MIT",
+      "dependencies": {
+        "@corti/sdk": "^0.5.0",
+        "@lit/react": "^1.0.8",
+        "lit": "^3.1.4"
+      },
+      "peerDependencies": {
+        "react": "^18.0.0 || ^19.0.0"
+      }
+    },
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+      "version": "0.5.0",
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+      "integrity": "sha512-wt+Z2qIhfFt85uiyRt5LPU4oVEJBXj8hZNWKeqFG4gRG/0RaRGJ7njQCwzFVjO+v4+Ipmf5CY7VdmZRAYYBPHw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "lightningcss": "^1.32.0",
+        "picomatch": "^4.0.3",
+        "postcss": "^8.5.8",
+        "rolldown": "1.0.0-rc.10",
+        "tinyglobby": "^0.2.15"
+      },
+      "bin": {
+        "vite": "bin/vite.js"
+      },
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      },
+      "funding": {
+        "url": "https://github.com/vitejs/vite?sponsor=1"
+      },
+      "optionalDependencies": {
+        "fsevents": "~2.3.3"
+      },
+      "peerDependencies": {
+        "@types/node": "^20.19.0 || >=22.12.0",
+        "@vitejs/devtools": "^0.1.0",
+        "esbuild": "^0.27.0",
+        "jiti": ">=1.21.0",
+        "less": "^4.0.0",
+        "sass": "^1.70.0",
+        "sass-embedded": "^1.70.0",
+        "stylus": ">=0.54.8",
+        "sugarss": "^5.0.0",
+        "terser": "^5.16.0",
+        "tsx": "^4.8.1",
+        "yaml": "^2.4.2"
+      },
+      "peerDependenciesMeta": {
+        "@types/node": {
+          "optional": true
+        },
+        "@vitejs/devtools": {
+          "optional": true
+        },
+        "esbuild": {
+          "optional": true
+        },
+        "jiti": {
+          "optional": true
+        },
+        "less": {
+          "optional": true
+        },
+        "sass": {
+          "optional": true
+        },
+        "sass-embedded": {
+          "optional": true
+        },
+        "stylus": {
+          "optional": true
+        },
+        "sugarss": {
+          "optional": true
+        },
+        "terser": {
+          "optional": true
+        },
+        "tsx": {
+          "optional": true
+        },
+        "yaml": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/ws": {
+      "version": "8.19.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.19.0.tgz",
+      "integrity": "sha512-blAT2mjOEIi0ZzruJfIhb3nps74PRWTCz1IjglWEEpQl5XS/UNama6u2/rjFkDDouqr4L67ry+1aGIALViWjDg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    }
+  }
+}
diff --git a/embedded-assistant/c-sharp-wpf/WebAssets/package.json b/embedded-assistant/c-sharp-wpf/WebAssets/package.json
new file mode 100644
index 0000000..289d5ed
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/WebAssets/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "webassets",
+  "version": "1.0.0",
+  "private": true,
+  "scripts": {
+    "build": "vite build"
+  },
+  "type": "module",
+  "dependencies": {
+    "@corti/embedded-web": "^0.1.1"
+  },
+  "devDependencies": {
+    "vite": "^8.0.1"
+  }
+}
diff --git a/embedded-assistant/c-sharp-wpf/WebAssets/src/main.ts b/embedded-assistant/c-sharp-wpf/WebAssets/src/main.ts
new file mode 100644
index 0000000..8968856
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/WebAssets/src/main.ts
@@ -0,0 +1,138 @@
+import "@corti/embedded-web";
+import type {
+  AuthPayload,
+  CortiEmbeddedAPI,
+  CreateInteractionPayload,
+  ErrorEventPayload,
+  InteractionDetails,
+} from "@corti/embedded-web/types";
+
+type CortiEmbeddedElement = HTMLElement & CortiEmbeddedAPI;
+type BootstrapMessage = AuthPayload & { baseUrl: string };
+type HostMessage =
+  | { type: "host.ready"; payload: null }
+  | { type: "session.started"; payload: string }
+  | { type: "error"; payload: string }
+  | { type: string; payload: unknown };
+
+declare global {
+  interface Window {
+    chrome?: {
+      webview?: {
+        postMessage: (message: string) => void;
+        addEventListener: (
+          type: "message",
+          listener: (event: MessageEvent<BootstrapMessage>) => void,
+        ) => void;
+      };
+    };
+  }
+}
+
+const statusElement = document.getElementById("status");
+const assistantElement = document.getElementById("assistant");
+
+if (!(statusElement instanceof HTMLDivElement)) {
+  throw new Error("Missing #status element");
+}
+
+if (!assistantElement) {
+  throw new Error("Missing #assistant element");
+}
+
+const status = statusElement;
+const corti = assistantElement as CortiEmbeddedElement;
+let bootstrapConfig: BootstrapMessage | null = null;
+let hasStarted = false;
+
+const postHostMessage = (message: HostMessage) => {
+  window.chrome?.webview?.postMessage(JSON.stringify(message));
+};
+
+const setErrorState = (message: string) => {
+  status.textContent = `Error: ${message}`;
+  status.style.background = "#ffebee";
+  status.style.color = "#c62828";
+};
+
+const reportError = (message: string) => {
+  setErrorState(message);
+  postHostMessage({ type: "error", payload: message });
+};
+
+window.addEventListener("error", event => {
+  reportError(event.message || "Unexpected application error");
+});
+
+window.addEventListener("unhandledrejection", event => {
+  const message = event.reason instanceof Error ? event.reason.message : String(event.reason);
+  reportError(message);
+});
+
+const startEmbeddedSession = () => {
+  if (hasStarted || bootstrapConfig === null) {
+    return;
+  }
+
+  hasStarted = true;
+  const config = bootstrapConfig;
+  corti.setAttribute("baseURL", config.baseUrl);
+  corti.setAttribute("visibility", "visible");
+};
+
+corti.addEventListener("embedded.ready", () => {
+  void (async () => {
+    if (bootstrapConfig === null) {
+      reportError("Missing host bootstrap configuration");
+      return;
+    }
+
+    try {
+      status.textContent = "Authenticating...";
+      await corti.auth(bootstrapConfig);
+
+      status.textContent = "Creating session...";
+      const interactionPayload: CreateInteractionPayload = {
+        assignedUserId: null,
+        encounter: {
+          identifier: `encounter-${Date.now()}`,
+          status: "planned",
+          type: "first_consultation",
+          period: { startedAt: new Date().toISOString() },
+        },
+      };
+      const interaction: InteractionDetails = await corti.createInteraction(interactionPayload);
+
+      status.textContent = "Navigating to session...";
+      await corti.navigate(`/session/${interaction.id}`);
+
+      status.textContent = "Ready";
+      status.style.background = "#e8f5e9";
+      status.style.color = "#2e7d32";
+      postHostMessage({ type: "session.started", payload: interaction.id });
+    } catch (error) {
+      const message = error instanceof Error ? error.message : String(error);
+      reportError(message);
+    }
+  })();
+}, { once: true });
+
+corti.addEventListener("embedded-event", (event: Event) => {
+  const detail = (event as CustomEvent<{ name: string; payload: unknown }>).detail;
+  postHostMessage({
+    type: detail.name,
+    payload: detail.payload ?? null,
+  });
+});
+
+corti.addEventListener("error", (event: Event) => {
+  const detail = (event as CustomEvent<ErrorEventPayload>).detail;
+  reportError(detail.message);
+});
+
+window.chrome?.webview?.addEventListener("message", (event: MessageEvent<BootstrapMessage>) => {
+  bootstrapConfig = event.data;
+  startEmbeddedSession();
+});
+
+postHostMessage({ type: "host.ready", payload: null });
diff --git a/embedded-assistant/c-sharp-wpf/WebAssets/tsconfig.json b/embedded-assistant/c-sharp-wpf/WebAssets/tsconfig.json
new file mode 100644
index 0000000..80d2776
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/WebAssets/tsconfig.json
@@ -0,0 +1,18 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "lib": [ "ES2022", "DOM", "DOM.Iterable" ],
+    "strict": true,
+    "noEmit": true,
+    "useDefineForClassFields": true,
+    "isolatedModules": true,
+    "skipLibCheck": true
+  },
+  "include": [ "src/**/*.ts" ],
+  "exclude": [
+    "node_modules",
+    "dist"
+  ]
+}
diff --git a/embedded-assistant/c-sharp-wpf/WebAssets/vite.config.js b/embedded-assistant/c-sharp-wpf/WebAssets/vite.config.js
new file mode 100644
index 0000000..cc3aaf1
--- /dev/null
+++ b/embedded-assistant/c-sharp-wpf/WebAssets/vite.config.js
@@ -0,0 +1,10 @@
+import { defineConfig } from "vite";
+
+export default defineConfig({
+    build: {
+        outDir: "dist",
+        rollupOptions: {
+            input: "index.html",
+        },
+    },
+});
\ No newline at end of file