diff --git a/ui/desktop/package-lock.json b/ui/desktop/package-lock.json
index 7ea56dbf18..294d05ec95 100644
--- a/ui/desktop/package-lock.json
+++ b/ui/desktop/package-lock.json
@@ -123,7 +123,7 @@
       }
     },
     "../acp": {
-      "name": "goose-acp-types",
+      "name": "@block/goose-acp",
       "version": "0.1.0",
       "dependencies": {
         "zod": "^3.25.76"
@@ -10330,32 +10330,6 @@
         "node": ">= 0.8"
       }
     },
-    "node_modules/encoding": {
-      "version": "0.1.13",
-      "resolved": "https://registry.npmjs.org/encoding/-/encoding-0.1.13.tgz",
-      "integrity": "sha512-ETBauow1T35Y/WZMkio9jiM0Z5xjHHmJ4XmjZOq1l/dXz3lr2sRn87nJy20RupqSh1F2m3HHPSp8ShIPQJrJ3A==",
-      "dev": true,
-      "license": "MIT",
-      "optional": true,
-      "peer": true,
-      "dependencies": {
-        "iconv-lite": "^0.6.2"
-      }
-    },
-    "node_modules/encoding/node_modules/iconv-lite": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
-      "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
-      "dev": true,
-      "license": "MIT",
-      "optional": true,
-      "dependencies": {
-        "safer-buffer": ">= 2.1.2 < 3.0.0"
-      },
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
     "node_modules/end-of-stream": {
       "version": "1.4.5",
       "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.5.tgz",
diff --git a/ui/desktop/src/components/BaseChat.tsx b/ui/desktop/src/components/BaseChat.tsx
index cee981fb93..5a47d434f8 100644
--- a/ui/desktop/src/components/BaseChat.tsx
+++ b/ui/desktop/src/components/BaseChat.tsx
@@ -42,6 +42,8 @@ import { Recipe } from '../recipe';
 import { useAutoSubmit } from '../hooks/useAutoSubmit';
 import { Goose } from './icons';
 import EnvironmentBadge from './GooseSidebar/EnvironmentBadge';
+import FeedbackBanner from './FeedbackBanner';
+import { useFeedbackPrompt } from '../hooks/useFeedbackPrompt';
 
 const CurrentModelContext = createContext<{ model: string; mode: string } | null>(null);
 export const useCurrentModelInfo = () => useContext(CurrentModelContext);
@@ -182,7 +184,7 @@ export default function BaseChat({
     session,
   });
 
-  const { setProviderAndModel } = useModelAndProvider();
+  const { setProviderAndModel, currentModel, currentProvider } = useModelAndProvider();
 
   useEffect(() => {
     if (session?.provider_name && session?.model_config?.model_name) {
@@ -233,6 +235,13 @@ export default function BaseChat({
 
   const toolCount = useToolCount(sessionId);
 
+  const { showFeedback, onRate, onDismiss } = useFeedbackPrompt({
+    messageCount: messages.length,
+    chatState,
+    provider: currentProvider,
+    model: currentModel,
+  });
+
   // Listen for global scroll-to-bottom requests (e.g., from MCP UI prompt actions)
   useEffect(() => {
     const handleGlobalScrollRequest = () => {
@@ -450,6 +459,10 @@ export default function BaseChat({
                   />
                 </SearchView>
 
+                {showFeedback && chatState === ChatState.Idle && (
+                  <FeedbackBanner onRate={onRate} onDismiss={onDismiss} />
+                )}
+
                 <div className="block h-8" />
               </>
             ) : !recipe && showPopularTopics ? (
diff --git a/ui/desktop/src/components/FeedbackBanner.tsx b/ui/desktop/src/components/FeedbackBanner.tsx
new file mode 100644
index 0000000000..af0b8c5915
--- /dev/null
+++ b/ui/desktop/src/components/FeedbackBanner.tsx
@@ -0,0 +1,70 @@
+import { useState } from 'react';
+
+interface FeedbackBannerProps {
+  onRate: (rating: 1 | 2 | 3 | 4) => void;
+  onDismiss: () => void;
+}
+
+const ratingOptions: Array<{ rating: 1 | 2 | 3 | 4; emoji: string; label: string }> = [
+  { rating: 1, emoji: '\u{1F623}', label: 'Frustrating' },
+  { rating: 2, emoji: '\u{1F615}', label: 'Poor' },
+  { rating: 3, emoji: '\u{1F642}', label: 'Good' },
+  { rating: 4, emoji: '\u{1F929}', label: 'Great' },
+];
+
+export default function FeedbackBanner({ onRate, onDismiss }: FeedbackBannerProps) {
+  const [submitted, setSubmitted] = useState(false);
+
+  const handleRate = (rating: 1 | 2 | 3 | 4) => {
+    setSubmitted(true);
+    setTimeout(() => onRate(rating), 1000);
+  };
+
+  if (submitted) {
+    return (
+      <div className="flex items-center justify-center py-2 text-xs text-text-secondary animate-[fadein_300ms_ease-in_forwards]">
+        Thanks for the feedback!
+      </div>
+    );
+  }
+
+  return (
+    <div className="flex items-center justify-center gap-3 py-2 animate-[fadein_300ms_ease-in_forwards]">
+      <span className="text-xs text-text-secondary">How&apos;s Goose doing?</span>
+      <div className="flex items-center gap-1">
+        {ratingOptions.map(({ rating, emoji, label }) => (
+          <button
+            key={rating}
+            onClick={() => handleRate(rating)}
+            className="p-1 rounded hover:bg-background-secondary transition-colors cursor-pointer"
+            title={label}
+            aria-label={label}
+          >
+            <span className="text-base">{emoji}</span>
+          </button>
+        ))}
+      </div>
+      <button
+        onClick={onDismiss}
+        className="ml-1 p-0.5 rounded text-text-secondary hover:text-text-primary hover:bg-background-secondary transition-colors cursor-pointer"
+        title="Dismiss"
+        aria-label="Dismiss feedback prompt"
+      >
+        <svg
+          xmlns="http://www.w3.org/2000/svg"
+          width="14"
+          height="14"
+          viewBox="0 0 24 24"
+          fill="none"
+          stroke="currentColor"
+          strokeWidth="2"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+        >
+          <line x1="18" y1="6" x2="6" y2="18" />
+          <line x1="6" y1="6" x2="18" y2="18" />
+        </svg>
+      </button>
+    </div>
+  );
+}
diff --git a/ui/desktop/src/hooks/useFeedbackPrompt.ts b/ui/desktop/src/hooks/useFeedbackPrompt.ts
new file mode 100644
index 0000000000..7ff4e47b7d
--- /dev/null
+++ b/ui/desktop/src/hooks/useFeedbackPrompt.ts
@@ -0,0 +1,87 @@
+import { useCallback, useEffect, useRef, useState } from 'react';
+import { canTrack, trackFeedbackSubmitted, trackFeedbackDismissed } from '../utils/analytics';
+import { ChatState } from '../types/chatState';
+
+const EXCHANGE_INTERVAL = 5; // Show after every Nth exchange
+const IN_SESSION_COOLDOWN_MS = 20 * 60 * 1000; // 20 minutes
+const CROSS_SESSION_COOLDOWN_MS = 24 * 60 * 60 * 1000; // 24 hours
+
+interface UseFeedbackPromptOptions {
+  messageCount: number;
+  chatState: ChatState;
+  provider?: string | null;
+  model?: string | null;
+}
+
+export function useFeedbackPrompt({
+  messageCount,
+  chatState,
+  provider,
+  model,
+}: UseFeedbackPromptOptions) {
+  const [showFeedback, setShowFeedback] = useState(false);
+  const exchangeCountRef = useRef(0);
+  const lastPromptTimeRef = useRef(0);
+  const prevChatStateRef = useRef<ChatState>(chatState);
+
+  useEffect(() => {
+    const wasStreaming = prevChatStateRef.current !== ChatState.Idle;
+    const isNowIdle = chatState === ChatState.Idle;
+    prevChatStateRef.current = chatState;
+
+    // Only trigger when transitioning from streaming to idle
+    if (!wasStreaming || !isNowIdle) return;
+
+    // Check telemetry at event time (it can change during the session)
+    if (!canTrack()) return;
+
+    exchangeCountRef.current += 1;
+    const count = exchangeCountRef.current;
+
+    // Only show on every Nth exchange, never before the first interval
+    if (count < EXCHANGE_INTERVAL || count % EXCHANGE_INTERVAL !== 0) return;
+
+    // In-session cooldown
+    const now = Date.now();
+    if (now - lastPromptTimeRef.current < IN_SESSION_COOLDOWN_MS) return;
+
+    // Cross-session cooldown (async check)
+    (async () => {
+      try {
+        const lastTimestamp =
+          (await window.electron.getSetting('lastFeedbackTimestamp')) as number;
+        if (lastTimestamp && now - lastTimestamp < CROSS_SESSION_COOLDOWN_MS) return;
+      } catch {
+        // If settings read fails, proceed anyway
+      }
+
+      lastPromptTimeRef.current = now;
+      setShowFeedback(true);
+    })();
+  }, [chatState]);
+
+  const onRate = useCallback(
+    (rating: 1 | 2 | 3 | 4) => {
+      setShowFeedback(false);
+      trackFeedbackSubmitted(rating, messageCount, provider || undefined, model || undefined);
+      try {
+        window.electron.setSetting('lastFeedbackTimestamp', Date.now());
+      } catch {
+        // Best-effort persistence
+      }
+    },
+    [messageCount, provider, model]
+  );
+
+  const onDismiss = useCallback(() => {
+    setShowFeedback(false);
+    trackFeedbackDismissed(messageCount);
+    try {
+      window.electron.setSetting('lastFeedbackTimestamp', Date.now());
+    } catch {
+      // Best-effort persistence
+    }
+  }, [messageCount]);
+
+  return { showFeedback, onRate, onDismiss };
+}
diff --git a/ui/desktop/src/main.ts b/ui/desktop/src/main.ts
index bfba32cb8d..6819a1aa52 100644
--- a/ui/desktop/src/main.ts
+++ b/ui/desktop/src/main.ts
@@ -1289,6 +1289,7 @@ const validSettingKeys: Set<string> = new Set([
   'showPricing',
   'sessionSharing',
   'seenAnnouncementIds',
+  'lastFeedbackTimestamp',
 ]);
 
 ipcMain.handle('set-setting', (_event, key: SettingKey, value: unknown) => {
diff --git a/ui/desktop/src/utils/analytics.ts b/ui/desktop/src/utils/analytics.ts
index 4e85690291..1d66fc26d2 100644
--- a/ui/desktop/src/utils/analytics.ts
+++ b/ui/desktop/src/utils/analytics.ts
@@ -26,7 +26,7 @@ export function setTelemetryEnabled(enabled: boolean): void {
   telemetryEnabled = enabled;
 }
 
-function canTrack(): boolean {
+export function canTrack(): boolean {
   return telemetryEnabled === true;
 }
 
@@ -234,6 +234,22 @@ export type AnalyticsEvent =
         method: 'electron-updater' | 'github-fallback';
         action: 'quit_and_install' | 'open_folder_and_quit' | 'open_folder_only';
       };
+    }
+  // In-session feedback
+  | {
+      name: 'feedback_submitted';
+      properties: {
+        rating: 1 | 2 | 3 | 4;
+        session_message_count: number;
+        provider?: string;
+        model?: string;
+      };
+    }
+  | {
+      name: 'feedback_dismissed';
+      properties: {
+        session_message_count: number;
+      };
     };
 // NOTE: slash_command_used is tracked by the backend (posthog.rs) with command_type info
 
@@ -752,3 +768,31 @@ export function trackUpdateInstallInitiated(
     properties: { version, method, action },
   });
 }
+
+// ============================================================================
+// In-Session Feedback Tracking
+// ============================================================================
+
+export function trackFeedbackSubmitted(
+  rating: 1 | 2 | 3 | 4,
+  sessionMessageCount: number,
+  provider?: string,
+  model?: string
+): void {
+  trackEvent({
+    name: 'feedback_submitted',
+    properties: {
+      rating,
+      session_message_count: sessionMessageCount,
+      provider,
+      model,
+    },
+  });
+}
+
+export function trackFeedbackDismissed(sessionMessageCount: number): void {
+  trackEvent({
+    name: 'feedback_dismissed',
+    properties: { session_message_count: sessionMessageCount },
+  });
+}
diff --git a/ui/desktop/src/utils/settings.ts b/ui/desktop/src/utils/settings.ts
index 31226f0685..0648015463 100644
--- a/ui/desktop/src/utils/settings.ts
+++ b/ui/desktop/src/utils/settings.ts
@@ -44,6 +44,7 @@ export interface Settings {
   showPricing: boolean;
   sessionSharing: SessionSharingConfig;
   seenAnnouncementIds: string[];
+  lastFeedbackTimestamp: number;
 }
 
 export type SettingKey = keyof Settings;
@@ -85,6 +86,7 @@ export const defaultSettings: Settings = {
     baseUrl: '',
   },
   seenAnnouncementIds: [],
+  lastFeedbackTimestamp: 0,
 };
 
 export function getKeyboardShortcuts(settings: Settings): KeyboardShortcuts {