diff --git a/package.json b/package.json
index 2bb4ed2..3efe3e1 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
     "@tanstack/react-virtual": "^3.13.18",
     "@tauri-apps/api": "^2",
     "@tauri-apps/plugin-dialog": "^2.6.0",
+    "@tauri-apps/plugin-notification": "^2.3.3",
     "@tauri-apps/plugin-opener": "^2",
     "@tauri-apps/plugin-process": "^2.3.1",
     "@tauri-apps/plugin-updater": "^2.10.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e8d3be0..32370b3 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -41,6 +41,9 @@ importers:
       '@tauri-apps/plugin-dialog':
         specifier: ^2.6.0
         version: 2.6.0
+      '@tauri-apps/plugin-notification':
+        specifier: ^2.3.3
+        version: 2.3.3
       '@tauri-apps/plugin-opener':
         specifier: ^2
         version: 2.5.3
@@ -2530,6 +2533,9 @@ packages:
   '@tauri-apps/plugin-dialog@2.6.0':
     resolution: {integrity: sha512-q4Uq3eY87TdcYzXACiYSPhmpBA76shgmQswGkSVio4C82Sz2W4iehe9TnKYwbq7weHiL88Yw19XZm7v28+Micg==}
 
+  '@tauri-apps/plugin-notification@2.3.3':
+    resolution: {integrity: sha512-Zw+ZH18RJb41G4NrfHgIuofJiymusqN+q8fGUIIV7vyCH+5sSn5coqRv/MWB9qETsUs97vmU045q7OyseCV3Qg==}
+
   '@tauri-apps/plugin-opener@2.5.3':
     resolution: {integrity: sha512-CCcUltXMOfUEArbf3db3kCE7Ggy1ExBEBl51Ko2ODJ6GDYHRp1nSNlQm5uNCFY5k7/ufaK5Ib3Du/Zir19IYQQ==}
 
@@ -9074,6 +9080,10 @@ snapshots:
     dependencies:
       '@tauri-apps/api': 2.10.1
 
+  '@tauri-apps/plugin-notification@2.3.3':
+    dependencies:
+      '@tauri-apps/api': 2.10.1
+
   '@tauri-apps/plugin-opener@2.5.3':
     dependencies:
       '@tauri-apps/api': 2.10.1
diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index ba557ef..be3fcad 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -818,6 +818,7 @@ dependencies = [
  "tauri",
  "tauri-build",
  "tauri-plugin-dialog",
+ "tauri-plugin-notification",
  "tauri-plugin-opener",
  "tauri-plugin-process",
  "tauri-plugin-updater",
@@ -2960,6 +2961,18 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c41e0c4fef86961ac6d6f8a82609f55f31b05e4fce149ac5710e439df7619ba4"
 
+[[package]]
+name = "mac-notification-sys"
+version = "0.6.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29a16783dd1a47849b8c8133c9cd3eb2112cfbc6901670af3dba47c8bbfb07d3"
+dependencies = [
+ "cc",
+ "objc2",
+ "objc2-foundation",
+ "time",
+]
+
 [[package]]
 name = "markup5ever"
 version = "0.14.1"
@@ -3219,6 +3232,20 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "notify-rust"
+version = "4.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21af20a1b50be5ac5861f74af1a863da53a11c38684d9818d82f1c42f7fdc6c2"
+dependencies = [
+ "futures-lite",
+ "log",
+ "mac-notification-sys",
+ "serde",
+ "tauri-winrt-notification",
+ "zbus",
+]
+
 [[package]]
 name = "num-bigint"
 version = "0.4.6"
@@ -3976,7 +4003,7 @@ checksum = "740ebea15c5d1428f910cd1a5f52cebf8d25006245ed8ade92702f4943d91e07"
 dependencies = [
  "base64 0.22.1",
  "indexmap 2.13.0",
- "quick-xml",
+ "quick-xml 0.38.4",
  "serde",
  "time",
 ]
@@ -4192,6 +4219,15 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "quick-xml"
+version = "0.37.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "331e97a1af0bf59823e6eadffe373d7b27f485be8748f71471c662c1f269b7fb"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "quick-xml"
 version = "0.38.4"
@@ -4247,6 +4283,16 @@ dependencies = [
  "rand_core 0.6.4",
 ]
 
+[[package]]
+name = "rand"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
+dependencies = [
+ "rand_chacha 0.9.0",
+ "rand_core 0.9.5",
+]
+
 [[package]]
 name = "rand_chacha"
 version = "0.2.2"
@@ -4267,6 +4313,16 @@ dependencies = [
  "rand_core 0.6.4",
 ]
 
+[[package]]
+name = "rand_chacha"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.9.5",
+]
+
 [[package]]
 name = "rand_core"
 version = "0.5.1"
@@ -4285,6 +4341,15 @@ dependencies = [
  "getrandom 0.2.17",
 ]
 
+[[package]]
+name = "rand_core"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76afc826de14238e6e8c374ddcc1fa19e374fd8dd986b0d2af0d02377261d83c"
+dependencies = [
+ "getrandom 0.3.4",
+]
+
 [[package]]
 name = "rand_hc"
 version = "0.2.0"
@@ -6153,6 +6218,25 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "tauri-plugin-notification"
+version = "2.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01fc2c5ff41105bd1f7242d8201fdf3efd70749b82fa013a17f2126357d194cc"
+dependencies = [
+ "log",
+ "notify-rust",
+ "rand 0.9.2",
+ "serde",
+ "serde_json",
+ "serde_repr",
+ "tauri",
+ "tauri-plugin",
+ "thiserror 2.0.18",
+ "time",
+ "url",
+]
+
 [[package]]
 name = "tauri-plugin-opener"
 version = "2.5.3"
@@ -6334,6 +6418,18 @@ dependencies = [
  "toml 0.9.11+spec-1.1.0",
 ]
 
+[[package]]
+name = "tauri-winrt-notification"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b1e66e07de489fe43a46678dd0b8df65e0c973909df1b60ba33874e297ba9b9"
+dependencies = [
+ "quick-xml 0.37.5",
+ "thiserror 2.0.18",
+ "windows 0.61.3",
+ "windows-version",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.24.0"
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 24976df..b6d81c7 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -55,6 +55,7 @@ keyring = { version = "3", features = ["apple-native", "windows-native", "sync-s
 tauri-plugin-window-state = "2"
 tauri-plugin-updater = "2"
 tauri-plugin-process = "2"
+tauri-plugin-notification = "2"
 
 
 [target.'cfg(target_os = "windows")'.dependencies]
diff --git a/src-tauri/capabilities/default.json b/src-tauri/capabilities/default.json
index bddbbb4..9381994 100644
--- a/src-tauri/capabilities/default.json
+++ b/src-tauri/capabilities/default.json
@@ -22,6 +22,7 @@
     },
     "dialog:default",
     "updater:default",
-    "process:default"
+    "process:default",
+    "notification:default"
   ]
 }
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 1f1de6b..6d4ca5f 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -40,6 +40,7 @@ pub fn run() {
         .plugin(tauri_plugin_dialog::init())
         .plugin(tauri_plugin_updater::Builder::new().build())
         .plugin(tauri_plugin_process::init())
+        .plugin(tauri_plugin_notification::init())
         .manage(ConnectionManager::new())
         .manage(TerminalManager::new())
         .manage(windows::SettingsWindowState::new())
diff --git a/src/contexts/acp-connections-context.tsx b/src/contexts/acp-connections-context.tsx
index 06fb1d1..8be3606 100644
--- a/src/contexts/acp-connections-context.tsx
+++ b/src/contexts/acp-connections-context.tsx
@@ -42,6 +42,7 @@ import {
   CONNECTION_IDLE_TIMEOUT_MS,
   IDLE_SWEEP_INTERVAL_MS,
 } from "@/lib/constants"
+import { notifyTurnComplete } from "@/lib/notification"
 import { useAlertContext, type AlertAction } from "@/contexts/alert-context"
 
 // ── Shared types (re-exported for consumers) ──
@@ -1545,6 +1546,17 @@ export function AcpConnectionsProvider({ children }: { children: ReactNode }) {
               }
             }
           }
+          // Send OS notification when window is not focused
+          {
+            const nc = storeRef.current.connections.get(contextKey)
+            if (nc) {
+              const agentLabel = AGENT_LABELS[nc.agentType]
+              notifyTurnComplete(
+                "Codeg",
+                t("notificationTurnComplete", { agent: agentLabel }),
+              ).catch(() => {})
+            }
+          }
           break
         }
         case "error":
diff --git a/src/i18n/messages/ar.json b/src/i18n/messages/ar.json
index 2ed1c1b..bd95f1e 100644
--- a/src/i18n/messages/ar.json
+++ b/src/i18n/messages/ar.json
@@ -1311,7 +1311,8 @@
         "autoLinkPreflightFailed": "فشل فحص ما قبل التشغيل للربط التلقائي: {message}",
         "connectFailedTitle": "فشل اتصال {agent}",
         "toolFallbackTitle": "أداة",
-        "eventErrorTitle": "خطأ الوكيل"
+        "eventErrorTitle": "خطأ الوكيل",
+        "notificationTurnComplete": "{agent} أنهى الاستجابة"
       },
       "connectionLifecycle": {
         "tasks": {
diff --git a/src/i18n/messages/de.json b/src/i18n/messages/de.json
index 0deef4e..33b7820 100644
--- a/src/i18n/messages/de.json
+++ b/src/i18n/messages/de.json
@@ -1311,7 +1311,8 @@
         "autoLinkPreflightFailed": "Auto-Link-Preflight fehlgeschlagen: {message}",
         "connectFailedTitle": "{agent} Verbindung fehlgeschlagen",
         "toolFallbackTitle": "Werkzeug",
-        "eventErrorTitle": "Agentenfehler"
+        "eventErrorTitle": "Agentenfehler",
+        "notificationTurnComplete": "{agent} hat die Antwort abgeschlossen"
       },
       "connectionLifecycle": {
         "tasks": {
diff --git a/src/i18n/messages/en.json b/src/i18n/messages/en.json
index edf8090..81eb4d1 100644
--- a/src/i18n/messages/en.json
+++ b/src/i18n/messages/en.json
@@ -1311,7 +1311,8 @@
         "autoLinkPreflightFailed": "Auto-link preflight failed: {message}",
         "connectFailedTitle": "{agent} connection failed",
         "toolFallbackTitle": "Tool",
-        "eventErrorTitle": "Agent Error"
+        "eventErrorTitle": "Agent Error",
+        "notificationTurnComplete": "{agent} has finished responding"
       },
       "connectionLifecycle": {
         "tasks": {
diff --git a/src/i18n/messages/es.json b/src/i18n/messages/es.json
index d58d399..36c8470 100644
--- a/src/i18n/messages/es.json
+++ b/src/i18n/messages/es.json
@@ -1311,7 +1311,8 @@
         "autoLinkPreflightFailed": "Falló la verificación previa del autovínculo: {message}",
         "connectFailedTitle": "Falló la conexión de {agent}",
         "toolFallbackTitle": "Herramienta",
-        "eventErrorTitle": "Error del agente"
+        "eventErrorTitle": "Error del agente",
+        "notificationTurnComplete": "{agent} ha terminado de responder"
       },
       "connectionLifecycle": {
         "tasks": {
diff --git a/src/i18n/messages/fr.json b/src/i18n/messages/fr.json
index e461549..38b130e 100644
--- a/src/i18n/messages/fr.json
+++ b/src/i18n/messages/fr.json
@@ -1311,7 +1311,8 @@
         "autoLinkPreflightFailed": "Échec de la vérification préalable de l'auto-liaison : {message}",
         "connectFailedTitle": "Échec de la connexion de {agent}",
         "toolFallbackTitle": "Outil",
-        "eventErrorTitle": "Erreur de l'agent"
+        "eventErrorTitle": "Erreur de l'agent",
+        "notificationTurnComplete": "{agent} a terminé de répondre"
       },
       "connectionLifecycle": {
         "tasks": {
diff --git a/src/i18n/messages/ja.json b/src/i18n/messages/ja.json
index ecaf7a7..a6f58e7 100644
--- a/src/i18n/messages/ja.json
+++ b/src/i18n/messages/ja.json
@@ -1311,7 +1311,8 @@
         "autoLinkPreflightFailed": "自動リンクの事前チェックに失敗しました: {message}",
         "connectFailedTitle": "{agent} の接続に失敗しました",
         "toolFallbackTitle": "ツール",
-        "eventErrorTitle": "エージェントエラー"
+        "eventErrorTitle": "エージェントエラー",
+        "notificationTurnComplete": "{agent} の応答が完了しました"
       },
       "connectionLifecycle": {
         "tasks": {
diff --git a/src/i18n/messages/ko.json b/src/i18n/messages/ko.json
index 979127b..ddd26b3 100644
--- a/src/i18n/messages/ko.json
+++ b/src/i18n/messages/ko.json
@@ -1311,7 +1311,8 @@
         "autoLinkPreflightFailed": "자동 연결 사전 점검 실패: {message}",
         "connectFailedTitle": "{agent} 연결 실패",
         "toolFallbackTitle": "도구",
-        "eventErrorTitle": "에이전트 오류"
+        "eventErrorTitle": "에이전트 오류",
+        "notificationTurnComplete": "{agent} 응답이 완료되었습니다"
       },
       "connectionLifecycle": {
         "tasks": {
diff --git a/src/i18n/messages/pt.json b/src/i18n/messages/pt.json
index 52d65ad..d06b1a2 100644
--- a/src/i18n/messages/pt.json
+++ b/src/i18n/messages/pt.json
@@ -1311,7 +1311,8 @@
         "autoLinkPreflightFailed": "Pré-voo do vínculo automático falhou: {message}",
         "connectFailedTitle": "Falha na conexão de {agent}",
         "toolFallbackTitle": "Ferramenta",
-        "eventErrorTitle": "Erro do agente"
+        "eventErrorTitle": "Erro do agente",
+        "notificationTurnComplete": "{agent} terminou de responder"
       },
       "connectionLifecycle": {
         "tasks": {
diff --git a/src/i18n/messages/zh-CN.json b/src/i18n/messages/zh-CN.json
index 32488a1..0c707ec 100644
--- a/src/i18n/messages/zh-CN.json
+++ b/src/i18n/messages/zh-CN.json
@@ -1311,7 +1311,8 @@
         "autoLinkPreflightFailed": "自动链接预检查失败：{message}",
         "connectFailedTitle": "{agent} 连接失败",
         "toolFallbackTitle": "工具",
-        "eventErrorTitle": "Agent 错误"
+        "eventErrorTitle": "Agent 错误",
+        "notificationTurnComplete": "{agent} 已完成响应"
       },
       "connectionLifecycle": {
         "tasks": {
diff --git a/src/i18n/messages/zh-TW.json b/src/i18n/messages/zh-TW.json
index fa92f31..acd5468 100644
--- a/src/i18n/messages/zh-TW.json
+++ b/src/i18n/messages/zh-TW.json
@@ -1311,7 +1311,8 @@
         "autoLinkPreflightFailed": "自動連結預檢查失敗：{message}",
         "connectFailedTitle": "{agent} 連線失敗",
         "toolFallbackTitle": "工具",
-        "eventErrorTitle": "Agent 錯誤"
+        "eventErrorTitle": "Agent 錯誤",
+        "notificationTurnComplete": "{agent} 已完成回應"
       },
       "connectionLifecycle": {
         "tasks": {