diff --git a/crates/goose-server/src/routes/mod.rs b/crates/goose-server/src/routes/mod.rs
index 83cb42d90d..57e641f812 100644
--- a/crates/goose-server/src/routes/mod.rs
+++ b/crates/goose-server/src/routes/mod.rs
@@ -8,7 +8,6 @@ pub mod prompts;
 pub mod recipe;
 pub mod recipe_utils;
 pub mod reply;
-pub mod sampling;
 pub mod schedule;
 pub mod session;
 pub mod session_events;
@@ -35,6 +34,5 @@ pub fn configure(state: Arc<crate::state::AppState>, secret_key: String) -> Rout
         .merge(telemetry::routes(state.clone()))
         .merge(mcp_app_proxy::routes(secret_key))
         .merge(session_events::routes(state.clone()))
-        .merge(sampling::routes(state.clone()))
         .merge(dictation::routes(state.clone()))
 }
diff --git a/crates/goose-server/src/routes/sampling.rs b/crates/goose-server/src/routes/sampling.rs
deleted file mode 100644
index 7057d61a28..0000000000
--- a/crates/goose-server/src/routes/sampling.rs
+++ /dev/null
@@ -1,97 +0,0 @@
-use axum::{
-    extract::{Path, State},
-    http::StatusCode,
-    routing::post,
-    Json, Router,
-};
-use goose::conversation::message::Message;
-use rmcp::model::{
-    CreateMessageRequestParams, CreateMessageResult, Role, SamplingContent, SamplingMessage,
-    SamplingMessageContent,
-};
-use std::sync::Arc;
-
-use crate::state::AppState;
-
-pub fn routes(state: Arc<AppState>) -> Router {
-    Router::new()
-        .route(
-            "/sessions/{session_id}/sampling/message",
-            post(create_message),
-        )
-        .with_state(state)
-}
-
-async fn create_message(
-    State(state): State<Arc<AppState>>,
-    Path(session_id): Path<String>,
-    Json(request): Json<CreateMessageRequestParams>,
-) -> Result<Json<CreateMessageResult>, StatusCode> {
-    let agent = state.get_agent_for_route(session_id.clone()).await?;
-
-    let provider = agent.provider().await.map_err(|e| {
-        tracing::error!("Failed to get provider: {}", e);
-        StatusCode::INTERNAL_SERVER_ERROR
-    })?;
-
-    let messages: Vec<Message> = request
-        .messages
-        .iter()
-        .map(|msg| {
-            let base = match msg.role {
-                Role::User => Message::user(),
-                Role::Assistant => Message::assistant(),
-            };
-            content_to_message(base, &msg.content)
-        })
-        .collect();
-
-    let system = request
-        .system_prompt
-        .as_deref()
-        .unwrap_or("You are a helpful AI assistant.");
-
-    let model_config = agent
-        .model_config_for_session(&session_id)
-        .await
-        .map_err(|e| {
-            tracing::error!("Failed to resolve model config: {}", e);
-            StatusCode::INTERNAL_SERVER_ERROR
-        })?;
-    let (response, usage) = goose::session_context::with_session_id(
-        Some(session_id.clone()),
-        provider.complete(&model_config, system, &messages, &[]),
-    )
-    .await
-    .map_err(|e| {
-        tracing::error!("Sampling completion failed: {}", e);
-        StatusCode::INTERNAL_SERVER_ERROR
-    })?;
-
-    let text = response.as_concat_text();
-
-    Ok(Json(
-        CreateMessageResult::new(
-            SamplingMessage::new(Role::Assistant, SamplingMessageContent::text(&text)),
-            usage.model,
-        )
-        .with_stop_reason(CreateMessageResult::STOP_REASON_END_TURN),
-    ))
-}
-
-fn content_to_message(base: Message, content: &SamplingContent<SamplingMessageContent>) -> Message {
-    let items = match content {
-        SamplingContent::Single(item) => vec![item],
-        SamplingContent::Multiple(items) => items.iter().collect(),
-    };
-
-    let mut msg = base;
-    for item in items {
-        msg = match item {
-            SamplingMessageContent::Text(text) => msg.with_text(&text.text),
-            SamplingMessageContent::Image(image) => msg.with_image(&image.data, &image.mime_type),
-            _ => msg,
-        };
-    }
-    msg
-}
diff --git a/crates/goose/src/goose_apps/cache.rs b/crates/goose/src/goose_apps/cache.rs
index 36582829fe..3cb0d58380 100644
--- a/crates/goose/src/goose_apps/cache.rs
+++ b/crates/goose/src/goose_apps/cache.rs
@@ -8,7 +8,6 @@ use tracing::warn;
 use super::app::GooseApp;
 
 static CLOCK_HTML: &str = include_str!("../goose_apps/clock.html");
-static CHAT_HTML: &str = include_str!("../goose_apps/chat.html");
 const APPS_EXTENSION_NAME: &str = "apps";
 
 pub struct McpAppCache {
@@ -25,12 +24,10 @@ impl McpAppCache {
     }
 
     fn ensure_default_apps(&self) {
-        for (uri, html) in [("apps://clock", CLOCK_HTML), ("apps://chat", CHAT_HTML)] {
-            if self.get_app(APPS_EXTENSION_NAME, uri).is_none() {
-                if let Ok(mut app) = GooseApp::from_html(html) {
-                    app.mcp_servers = vec![APPS_EXTENSION_NAME.to_string()];
-                    let _ = self.store_app(&app);
-                }
+        if self.get_app(APPS_EXTENSION_NAME, "apps://clock").is_none() {
+            if let Ok(mut app) = GooseApp::from_html(CLOCK_HTML) {
+                app.mcp_servers = vec![APPS_EXTENSION_NAME.to_string()];
+                let _ = self.store_app(&app);
             }
         }
     }
diff --git a/crates/goose/src/goose_apps/chat.html b/crates/goose/src/goose_apps/chat.html
deleted file mode 100644
index 906d6a8500..0000000000
--- a/crates/goose/src/goose_apps/chat.html
+++ /dev/null
@@ -1,184 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-  <meta charset="UTF-8">
-  <title>Chat</title>
-  <script type="application/ld+json">
-    {
-      "@context": "https://goose.ai/schema",
-      "@type": "GooseApp",
-      "name": "chat",
-      "description": "Simple Chat UI",
-      "width": 400,
-      "height": 500,
-      "resizable": true
-    }
-  </script>
-  <style>
-    * { box-sizing: border-box; margin: 0; padding: 0; }
-    html, body { height: 100%; font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
-    body { display: flex; flex-direction: column; background: #fff; }
-    
-    .messages {
-      flex: 1;
-      overflow-y: auto;
-      padding: 16px;
-      display: flex;
-      flex-direction: column;
-      gap: 12px;
-    }
-    
-    .message {
-      max-width: 80%;
-      padding: 10px 14px;
-      border-radius: 16px;
-      line-height: 1.4;
-      font-size: 14px;
-      word-wrap: break-word;
-    }
-    
-    .message.user {
-      align-self: flex-end;
-      background: #000;
-      color: #fff;
-    }
-    
-    .message.assistant {
-      align-self: flex-start;
-      background: #f0f0f0;
-      color: #000;
-    }
-    
-    .message.loading {
-      font-style: italic;
-      color: #666;
-    }
-    
-    .input-area {
-      display: flex;
-      gap: 8px;
-      padding: 12px;
-      border-top: 1px solid #e0e0e0;
-      background: #fafafa;
-    }
-    
-    #messageInput {
-      flex: 1;
-      padding: 10px 14px;
-      border: 1px solid #ddd;
-      border-radius: 20px;
-      font-size: 14px;
-      outline: none;
-    }
-    
-    #messageInput:focus { border-color: #999; }
-    
-    #sendBtn {
-      padding: 10px 20px;
-      background: #000;
-      color: #fff;
-      border: none;
-      border-radius: 20px;
-      font-size: 14px;
-      cursor: pointer;
-    }
-    
-    #sendBtn:disabled {
-      background: #ccc;
-      cursor: not-allowed;
-    }
-  </style>
-</head>
-<body>
-  <div class="messages" id="messages"></div>
-  <div class="input-area">
-    <input type="text" id="messageInput" placeholder="Type a message..." />
-    <button id="sendBtn">Send</button>
-  </div>
-
-  <script>
-    const messagesEl = document.getElementById('messages');
-    const inputEl = document.getElementById('messageInput');
-    const sendBtn = document.getElementById('sendBtn');
-    const conversationHistory = [];
-    const pendingRequests = new Map();
-    let requestId = 0;
-
-    function addMessage(role, text, isLoading = false) {
-      const div = document.createElement('div');
-      div.className = `message ${role}${isLoading ? ' loading' : ''}`;
-      div.textContent = text;
-      messagesEl.appendChild(div);
-      messagesEl.scrollTop = messagesEl.scrollHeight;
-      return div;
-    }
-
-    function request(method, params) {
-      return new Promise((resolve, reject) => {
-        const id = ++requestId;
-        pendingRequests.set(id, { resolve, reject });
-        window.parent.postMessage({ jsonrpc: '2.0', id, method, params }, '*');
-      });
-    }
-
-    window.addEventListener('message', (event) => {
-      const data = event.data;
-      if (!data || typeof data !== 'object') return;
-      
-      if ('id' in data && pendingRequests.has(data.id)) {
-        const { resolve, reject } = pendingRequests.get(data.id);
-        pendingRequests.delete(data.id);
-        if (data.error) {
-          reject(new Error(data.error.message || 'Unknown error'));
-        } else {
-          resolve(data.result);
-        }
-      }
-    });
-
-    request('ui/initialize', {}).then(() => {
-      window.parent.postMessage({ jsonrpc: '2.0', method: 'ui/notifications/initialized', params: {} }, '*');
-    });
-
-    async function sendMessage() {
-      const text = inputEl.value.trim();
-      if (!text) return;
-
-      inputEl.value = '';
-      sendBtn.disabled = true;
-
-      addMessage('user', text);
-      conversationHistory.push({ role: 'user', content: { type: 'text', text } });
-
-      const loadingEl = addMessage('assistant', 'Thinking...', true);
-
-      try {
-        const response = await request('sampling/createMessage', {
-          messages: conversationHistory,
-          systemPrompt: 'You are a helpful assistant. Keep responses concise.',
-          maxTokens: 1000
-        });
-
-        const responseText = response.content.text;
-        conversationHistory.push({ role: 'assistant', content: { type: 'text', text: responseText } });
-        
-        loadingEl.textContent = responseText;
-        loadingEl.classList.remove('loading');
-      } catch (err) {
-        loadingEl.textContent = 'Error: ' + err.message;
-        loadingEl.classList.remove('loading');
-      }
-
-      sendBtn.disabled = false;
-      inputEl.focus();
-    }
-
-    sendBtn.addEventListener('click', sendMessage);
-    inputEl.addEventListener('keypress', (e) => {
-      if (e.key === 'Enter') sendMessage();
-    });
-
-    inputEl.focus();
-  </script>
-</body>
-</html>
diff --git a/ui/desktop/src/components/McpApps/McpAppRenderer.tsx b/ui/desktop/src/components/McpApps/McpAppRenderer.tsx
index c4681f1a89..cb8daba8a2 100644
--- a/ui/desktop/src/components/McpApps/McpAppRenderer.tsx
+++ b/ui/desktop/src/components/McpApps/McpAppRenderer.tsx
@@ -51,8 +51,6 @@ import {
   McpAppToolInputPartial,
   DimensionLayout,
   OnDisplayModeChange,
-  SamplingCreateMessageParams,
-  SamplingCreateMessageResponse,
 } from './types';
 import {
   useDisplayMode,
@@ -676,13 +674,6 @@ export default function McpAppRenderer({
 
   const [containerWidth, setContainerWidth] = useState<number>(0);
   const [containerHeight, setContainerHeight] = useState<number>(0);
-  const [apiHost, setApiHost] = useState<string | null>(null);
-  const [secretKey, setSecretKey] = useState<string | null>(null);
-
-  useEffect(() => {
-    window.electron.getGoosedHostPort().then(setApiHost);
-    window.electron.getSecretKey().then(setSecretKey);
-  }, []);
 
   // Fetch the resource from the extension to get HTML and metadata (CSP, permissions, etc.).
   // If cachedHtml is provided we show it immediately; the fetch updates metadata and
@@ -933,38 +924,12 @@ export default function McpAppRenderer({
 
   const handleFallbackRequest = useCallback(
     async (request: JSONRPCRequest, _extra: RequestHandlerExtra) => {
-      if (request.method === 'sampling/createMessage') {
-        if (!sessionId || !apiHost || !secretKey) {
-          throw new Error('Session not initialized for sampling request');
-        }
-        const { messages, systemPrompt, maxTokens } =
-          request.params as unknown as SamplingCreateMessageParams;
-        const response = await fetch(`${apiHost}/sessions/${sessionId}/sampling/message`, {
-          method: 'POST',
-          headers: {
-            'Content-Type': 'application/json',
-            'X-Secret-Key': secretKey,
-          },
-          body: JSON.stringify({
-            messages: messages.map((m) => ({
-              role: m.role,
-              content: m.content,
-            })),
-            systemPrompt,
-            maxTokens,
-          }),
-        });
-        if (!response.ok) {
-          throw new Error(`Sampling request failed: ${response.statusText}`);
-        }
-        return (await response.json()) as SamplingCreateMessageResponse;
-      }
       return {
         status: 'error' as const,
         message: `Unhandled JSON-RPC method: ${request.method ?? '<unknown>'}`,
       };
     },
-    [sessionId, apiHost, secretKey]
+    []
   );
 
   const handleError = useCallback((err: Error) => {
diff --git a/ui/desktop/src/components/McpApps/types.ts b/ui/desktop/src/components/McpApps/types.ts
index 44fdd42a72..d61d00fbe3 100644
--- a/ui/desktop/src/components/McpApps/types.ts
+++ b/ui/desktop/src/components/McpApps/types.ts
@@ -41,21 +41,3 @@ export type McpAppToolCancelled = McpUiToolCancelledNotification['params'];
  * host-side controls or app-initiated `ui/request-display-mode` changes.
  */
 export type OnDisplayModeChange = (mode: GooseDisplayMode) => void;
-
-export type SamplingMessage = {
-  role: 'user' | 'assistant';
-  content: { type: 'text'; text: string } | { type: 'image'; data: string; mimeType: string };
-};
-
-export type SamplingCreateMessageParams = {
-  messages: SamplingMessage[];
-  systemPrompt?: string;
-  maxTokens?: number;
-};
-
-export type SamplingCreateMessageResponse = {
-  model: string;
-  stopReason: string;
-  role: 'assistant';
-  content: { type: 'text'; text: string };
-};
diff --git a/ui/desktop/src/components/apps/AppsView.tsx b/ui/desktop/src/components/apps/AppsView.tsx
index c3cc353fda..df0a8138b7 100644
--- a/ui/desktop/src/components/apps/AppsView.tsx
+++ b/ui/desktop/src/components/apps/AppsView.tsx
@@ -1,12 +1,13 @@
 import { useCallback, useEffect, useRef, useState } from 'react';
 import { MainPanelLayout } from '../Layout/MainPanelLayout';
 import { Button } from '../ui/button';
-import { Download, Play, Upload } from 'lucide-react';
+import { AlertTriangle, Download, Play, Upload } from 'lucide-react';
 import type { GooseApp } from '../../types/apps';
 import { exportMcpApp, importMcpApp, listMcpApps } from '../../acp/mcp-apps';
 import { useChatContext } from '../../contexts/ChatContext';
 import { formatAppName } from '../../utils/conversionUtils';
 import { errorMessage } from '../../utils/conversionUtils';
+import { isRetiredGooseChatApp } from '../../utils/retiredApps';
 import { defineMessages, useIntl } from '../../i18n';
 
 const i18n = defineMessages({
@@ -52,6 +53,14 @@ const i18n = defineMessages({
     id: 'appsView.launch',
     defaultMessage: 'Launch',
   },
+  retiredChatApp: {
+    id: 'appsView.retiredChatApp',
+    defaultMessage: 'Chat app retired',
+  },
+  retiredChatAppDetail: {
+    id: 'appsView.retiredChatAppDetail',
+    defaultMessage: 'We removed this feature because MCP sampling is no longer supported.',
+  },
 });
 
 const GridLayout = ({ children }: { children: React.ReactNode }) => {
@@ -272,11 +281,25 @@ export default function AppsView() {
             <GridLayout>
               {apps.map((app) => {
                 const isCustomApp = app.mcpServers?.includes('apps') ?? false;
+                const retiredChatApp = isRetiredGooseChatApp(app);
                 return (
                   <div
                     key={`${app.uri}-${app.mcpServers?.join(',')}`}
                     className="flex flex-col p-4 border rounded-lg hover:border-border-primary transition-colors"
                   >
+                    {retiredChatApp && (
+                      <div className="mb-3 flex items-start gap-2 rounded border border-amber-300 bg-amber-50 px-3 py-2 text-sm text-amber-900 dark:border-amber-700 dark:bg-amber-950 dark:text-amber-100">
+                        <AlertTriangle className="mt-0.5 h-4 w-4 shrink-0" />
+                        <div>
+                          <div className="font-medium">
+                            {intl.formatMessage(i18n.retiredChatApp)}
+                          </div>
+                          <p className="mt-1 text-xs leading-5">
+                            {intl.formatMessage(i18n.retiredChatAppDetail)}
+                          </p>
+                        </div>
+                      </div>
+                    )}
                     <div className="flex-1 mb-4">
                       <h3 className="font-medium text-text-primary mb-2">
                         {formatAppName(app.name)}
@@ -297,6 +320,7 @@ export default function AppsView() {
                         variant="default"
                         size="sm"
                         onClick={() => handleLaunchApp(app)}
+                        disabled={retiredChatApp}
                         className="flex items-center gap-2 flex-1"
                       >
                         <Play className="h-4 w-4" />
diff --git a/ui/desktop/src/i18n/messages/de.json b/ui/desktop/src/i18n/messages/de.json
index 52640c837e..19dc36913b 100644
--- a/ui/desktop/src/i18n/messages/de.json
+++ b/ui/desktop/src/i18n/messages/de.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "Erneut versuchen"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "Apps"
   },
diff --git a/ui/desktop/src/i18n/messages/en.json b/ui/desktop/src/i18n/messages/en.json
index af7e0e216c..85085508b2 100644
--- a/ui/desktop/src/i18n/messages/en.json
+++ b/ui/desktop/src/i18n/messages/en.json
@@ -41,6 +41,12 @@
   "appsView.noAppsTitle": {
     "defaultMessage": "No apps available"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.retry": {
     "defaultMessage": "Retry"
   },
diff --git a/ui/desktop/src/i18n/messages/es.json b/ui/desktop/src/i18n/messages/es.json
index 25e7a307fa..8aba39ef76 100644
--- a/ui/desktop/src/i18n/messages/es.json
+++ b/ui/desktop/src/i18n/messages/es.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "Reintentar"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "Apps"
   },
diff --git a/ui/desktop/src/i18n/messages/fr.json b/ui/desktop/src/i18n/messages/fr.json
index d73f192eb5..41fc303d15 100644
--- a/ui/desktop/src/i18n/messages/fr.json
+++ b/ui/desktop/src/i18n/messages/fr.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "Réessayer"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "Applications"
   },
diff --git a/ui/desktop/src/i18n/messages/hi.json b/ui/desktop/src/i18n/messages/hi.json
index 61db2c6d63..906fcb129b 100644
--- a/ui/desktop/src/i18n/messages/hi.json
+++ b/ui/desktop/src/i18n/messages/hi.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "पुनः प्रयास करें"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "ऐप्स"
   },
diff --git a/ui/desktop/src/i18n/messages/id.json b/ui/desktop/src/i18n/messages/id.json
index 37090e4852..bdd7de7128 100644
--- a/ui/desktop/src/i18n/messages/id.json
+++ b/ui/desktop/src/i18n/messages/id.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "Coba lagi"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "Aplikasi"
   },
diff --git a/ui/desktop/src/i18n/messages/it.json b/ui/desktop/src/i18n/messages/it.json
index c25c659f0f..c19fa48e16 100644
--- a/ui/desktop/src/i18n/messages/it.json
+++ b/ui/desktop/src/i18n/messages/it.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "Riprova"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "App"
   },
diff --git a/ui/desktop/src/i18n/messages/ja.json b/ui/desktop/src/i18n/messages/ja.json
index 79e3e4f8cd..75863c6d3b 100644
--- a/ui/desktop/src/i18n/messages/ja.json
+++ b/ui/desktop/src/i18n/messages/ja.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "再試行"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "アプリ"
   },
diff --git a/ui/desktop/src/i18n/messages/ko.json b/ui/desktop/src/i18n/messages/ko.json
index 45c8220bea..09aa513621 100644
--- a/ui/desktop/src/i18n/messages/ko.json
+++ b/ui/desktop/src/i18n/messages/ko.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "다시 시도"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "앱"
   },
diff --git a/ui/desktop/src/i18n/messages/ms.json b/ui/desktop/src/i18n/messages/ms.json
index ca44ad01ee..68fedd6c24 100644
--- a/ui/desktop/src/i18n/messages/ms.json
+++ b/ui/desktop/src/i18n/messages/ms.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "Cuba semula"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "Apl"
   },
diff --git a/ui/desktop/src/i18n/messages/pt.json b/ui/desktop/src/i18n/messages/pt.json
index a1e7110520..b715b37b65 100644
--- a/ui/desktop/src/i18n/messages/pt.json
+++ b/ui/desktop/src/i18n/messages/pt.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "Tentar novamente"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "Aplicações"
   },
diff --git a/ui/desktop/src/i18n/messages/ru.json b/ui/desktop/src/i18n/messages/ru.json
index fba6151910..fb890d3153 100644
--- a/ui/desktop/src/i18n/messages/ru.json
+++ b/ui/desktop/src/i18n/messages/ru.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "Повторить"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "Приложения"
   },
diff --git a/ui/desktop/src/i18n/messages/tr.json b/ui/desktop/src/i18n/messages/tr.json
index 398b902dc1..c69394cd8d 100644
--- a/ui/desktop/src/i18n/messages/tr.json
+++ b/ui/desktop/src/i18n/messages/tr.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "Yeniden dene"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "Uygulamalar"
   },
diff --git a/ui/desktop/src/i18n/messages/vi.json b/ui/desktop/src/i18n/messages/vi.json
index cc28a0b44b..8f94847441 100644
--- a/ui/desktop/src/i18n/messages/vi.json
+++ b/ui/desktop/src/i18n/messages/vi.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "Thử lại"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "Ứng dụng"
   },
diff --git a/ui/desktop/src/i18n/messages/zh-CN.json b/ui/desktop/src/i18n/messages/zh-CN.json
index e45d274c9e..ca094060af 100644
--- a/ui/desktop/src/i18n/messages/zh-CN.json
+++ b/ui/desktop/src/i18n/messages/zh-CN.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "重试"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "应用"
   },
diff --git a/ui/desktop/src/i18n/messages/zh-TW.json b/ui/desktop/src/i18n/messages/zh-TW.json
index f8f1acb731..002bae4570 100644
--- a/ui/desktop/src/i18n/messages/zh-TW.json
+++ b/ui/desktop/src/i18n/messages/zh-TW.json
@@ -44,6 +44,12 @@
   "appsView.retry": {
     "defaultMessage": "重試"
   },
+  "appsView.retiredChatApp": {
+    "defaultMessage": "Chat app retired"
+  },
+  "appsView.retiredChatAppDetail": {
+    "defaultMessage": "We removed this feature because MCP sampling is no longer supported."
+  },
   "appsView.title": {
     "defaultMessage": "應用程式"
   },
diff --git a/ui/desktop/src/main.ts b/ui/desktop/src/main.ts
index 95d326c559..f444410f17 100644
--- a/ui/desktop/src/main.ts
+++ b/ui/desktop/src/main.ts
@@ -33,6 +33,7 @@ import log from './utils/logger';
 import { ensureWinShims } from './utils/winShims';
 import { addRecentDir, loadRecentDirs } from './utils/recentDirs';
 import { formatAppName, errorMessage, formatErrorForLogging } from './utils/conversionUtils';
+import { isRetiredGooseChatApp } from './utils/retiredApps';
 import type { Settings, SettingKey } from './utils/settings';
 import { defaultSettings, getKeyboardShortcuts } from './utils/settings';
 import * as crypto from 'crypto';
@@ -2877,6 +2878,10 @@ async function appMain() {
 
   ipcMain.handle('launch-app', async (event, gooseApp: GooseApp) => {
     try {
+      if (isRetiredGooseChatApp(gooseApp)) {
+        throw new Error('This built-in Chat app is no longer supported.');
+      }
+
       const launchingWindow = BrowserWindow.fromWebContents(event.sender);
       if (!launchingWindow) {
         throw new Error('Could not find launching window');
diff --git a/ui/desktop/src/utils/retiredApps.ts b/ui/desktop/src/utils/retiredApps.ts
new file mode 100644
index 0000000000..14fbc72e17
--- /dev/null
+++ b/ui/desktop/src/utils/retiredApps.ts
@@ -0,0 +1,13 @@
+import type { GooseApp } from '../types/apps';
+
+export function isRetiredGooseChatApp(app: GooseApp) {
+  return (
+    app.mcpServers?.includes('apps') &&
+    app.uri === 'ui://apps/chat' &&
+    app.name === 'chat' &&
+    app.description === 'Simple Chat UI' &&
+    app.width === 400 &&
+    app.height === 500 &&
+    app.resizable === true
+  );
+}