diff --git a/web/src/components/layout/AppHeader.tsx b/web/src/components/layout/AppHeader.tsx
index 607bcc152..b428b284e 100644
--- a/web/src/components/layout/AppHeader.tsx
+++ b/web/src/components/layout/AppHeader.tsx
@@ -16,6 +16,7 @@ import { ChevronRight, Menu, Search } from "lucide-react";
 import { Logo } from "@/components/svg";
 import { useAppStore } from "@/stores";
 import { ConnectionIndicator } from "@/components/shared/ConnectionIndicator";
+import { NotificationBell } from "./NotificationBell";
 import { OrgSwitcher } from "./OrgSwitcher";
 import { PlanPill } from "./PlanPill";
 
@@ -130,6 +131,7 @@ export function AppHeader({ onMenu }: { onMenu?: () => void }) {
                     <div className="h-4 w-px bg-slate-200/80" />
                 </div>
                 <ConnectionIndicator />
+                <NotificationBell />
                 <button
                     onClick={() => setCommandPaletteOpen(true)}
                     className="flex items-center gap-2 px-2 h-7 rounded-md text-slate-500 hover:text-slate-900 hover:bg-slate-200/60 transition-colors text-[12.5px]"
diff --git a/web/src/components/layout/NotificationBell.tsx b/web/src/components/layout/NotificationBell.tsx
new file mode 100644
index 000000000..1aae7c42d
--- /dev/null
+++ b/web/src/components/layout/NotificationBell.tsx
@@ -0,0 +1,104 @@
+// The in-app notification bell in the dashboard chrome. Reads the persisted feed
+// (source of truth for unread state) + refreshes live on the realtime
+// NOTIFICATION event (wired in useRealtimeEvents).
+
+import React from "react";
+import { Link } from "react-router-dom";
+import { BellIcon } from "lucide-react";
+import useClickOutside from "@/hooks/useClickOutside";
+import {
+    useNotifications,
+    useMarkAllNotificationsRead,
+    useMarkNotificationRead,
+} from "@/lib/api/hooks/app/notifications/useNotifications";
+import type { AppNotification } from "@/lib/api/models/app/notifications/Notification";
+
+export function NotificationBell() {
+    const { data } = useNotifications();
+    const markAll = useMarkAllNotificationsRead();
+    const markOne = useMarkNotificationRead();
+    const [open, setOpen] = React.useState(false);
+    const ref = React.useRef<HTMLDivElement>(null);
+    const close = React.useCallback(() => setOpen(false), []);
+    useClickOutside(ref, close);
+
+    const unread = data?.unread ?? 0;
+    const items = data?.notifications ?? [];
+
+    const itemBody = (n: AppNotification) => (
+        <div className="flex items-start gap-2">
+            {!n.read_at && <span className="mt-1.5 size-1.5 rounded-full bg-sky-500 shrink-0" />}
+            <div className={`min-w-0 ${n.read_at ? "opacity-60" : ""}`}>
+                <div className="text-[12px] font-medium text-slate-800 truncate">{n.title}</div>
+                {n.body && <div className="text-[11px] text-slate-500 truncate">{n.body}</div>}
+                <div className="text-[10px] text-slate-400 mt-0.5">{new Date(n.created_at).toLocaleString()}</div>
+            </div>
+        </div>
+    );
+
+    return (
+        <div ref={ref} className="relative">
+            <button
+                type="button"
+                onClick={() => setOpen((o) => !o)}
+                aria-label="Notifications"
+                className="relative w-7 h-7 rounded-md flex items-center justify-center text-slate-500 hover:text-slate-900 hover:bg-slate-200/60 transition-colors"
+            >
+                <BellIcon className="w-4 h-4" />
+                {unread > 0 && (
+                    <span className="absolute -top-0.5 -right-0.5 min-w-[14px] h-[14px] px-1 rounded-full bg-rose-500 text-white text-[9px] font-semibold flex items-center justify-center">
+                        {unread > 9 ? "9+" : unread}
+                    </span>
+                )}
+            </button>
+
+            {open && (
+                <div className="absolute right-0 top-full mt-1.5 w-80 max-w-[90vw] rounded-md border border-slate-200 bg-white shadow-[0_12px_32px_-8px_rgba(15,23,42,0.18)] z-50 overflow-hidden">
+                    <div className="h-9 px-3 flex items-center border-b border-slate-200">
+                        <span className="text-[12px] font-medium text-slate-900">Notifications</span>
+                        {unread > 0 && (
+                            <button
+                                type="button"
+                                onClick={() => markAll.mutate()}
+                                className="ml-auto text-[11px] text-sky-600 hover:text-sky-700"
+                            >
+                                Mark all read
+                            </button>
+                        )}
+                    </div>
+                    <div className="max-h-96 overflow-y-auto">
+                        {items.length === 0 ? (
+                            <div className="px-3 py-6 text-center text-[12px] text-slate-400">You&apos;re all caught up.</div>
+                        ) : (
+                            items.map((n) => {
+                                const click = () => {
+                                    if (!n.read_at) markOne.mutate(n.id);
+                                    setOpen(false);
+                                };
+                                return n.link ? (
+                                    <Link
+                                        key={n.id}
+                                        to={n.link}
+                                        onClick={click}
+                                        className="block px-3 py-2 hover:bg-slate-50 border-b border-slate-100 last:border-0"
+                                    >
+                                        {itemBody(n)}
+                                    </Link>
+                                ) : (
+                                    <button
+                                        key={n.id}
+                                        type="button"
+                                        onClick={click}
+                                        className="block w-full text-left px-3 py-2 hover:bg-slate-50 border-b border-slate-100 last:border-0"
+                                    >
+                                        {itemBody(n)}
+                                    </button>
+                                );
+                            })
+                        )}
+                    </div>
+                </div>
+            )}
+        </div>
+    );
+}
diff --git a/web/src/hooks/useRealtimeEvents.ts b/web/src/hooks/useRealtimeEvents.ts
index a1b03a19f..7bca89f2e 100644
--- a/web/src/hooks/useRealtimeEvents.ts
+++ b/web/src/hooks/useRealtimeEvents.ts
@@ -175,6 +175,13 @@ export function useRealtimeEvents() {
         return
       }
 
+      // A new in-app notification for this user: refresh the bell feed live
+      // (invalidate-only — the badge updates without a toast, to avoid burst spam).
+      if (includes('NOTIFICATION')) {
+        invalidate([['notifications', 'feed']])
+        return
+      }
+
       // An automation was created/updated/deleted or fired: refresh the list and,
       // for a specific automation, its detail + run history (live in the builder).
       if (includes('AUTOMATION')) {