diff --git a/src/components/layout/notification-bell.tsx b/src/components/layout/notification-bell.tsx
index aaf1201..cecbdd7 100644
--- a/src/components/layout/notification-bell.tsx
+++ b/src/components/layout/notification-bell.tsx
@@ -91,7 +91,7 @@ export const NotificationBell = () => {
                                         <p className="text-sm font-medium text-primary">{alert.agent}</p>
                                         <p className="text-xs text-tertiary">{alert.type}</p>
                                     </div>
-                                    <Badge size="sm" color={alert.severity} type="pill-color">{alert.value}</Badge>
+                                    <Badge size="sm" color={alert.severity === 'error' ? 'error' : alert.severity === 'warning' ? 'warning' : 'gray'} type="pill-color">{alert.value}</Badge>
                                     <button
                                         onClick={() => dismiss(alert.id)}
                                         className="text-fg-quaternary hover:text-fg-secondary shrink-0 transition duration-100 ease-linear"
diff --git a/src/hooks/use-performance-alerts.ts b/src/hooks/use-performance-alerts.ts
index e37b904..b7369f2 100644
--- a/src/hooks/use-performance-alerts.ts
+++ b/src/hooks/use-performance-alerts.ts
@@ -1,106 +1,101 @@
-import { useEffect, useMemo, useRef, useState } from 'react';
-import { useData } from '@/providers/data-provider';
+import { useEffect, useRef, useState, useCallback } from 'react';
 import { useAuth } from '@/providers/auth-provider';
 import { notify } from '@/lib/toast';
 
 export type PerformanceAlert = {
     id: string;
     agent: string;
-    type: 'Excessive Idle Time' | 'Low NPS' | 'Low Conversion';
+    agentId: string | null;
+    type: string;
     value: string;
-    severity: 'error' | 'warning';
+    severity: 'error' | 'warning' | 'info';
+    message?: string | null;
+    firedAt?: string;
     dismissed: boolean;
 };
 
 const API_URL = import.meta.env.VITE_API_URL ?? 'http://localhost:4100';
+const POLL_INTERVAL_MS = 60_000;
+
+const sevToFront = (s: string): 'error' | 'warning' | 'info' => {
+    const v = (s ?? '').toLowerCase();
+    if (v === 'critical') return 'error';
+    if (v === 'warning') return 'warning';
+    return 'info';
+};
 
 export const usePerformanceAlerts = () => {
     const { isAdmin } = useAuth();
-    const { calls, leads } = useData();
     const [alerts, setAlerts] = useState<PerformanceAlert[]>([]);
-    const [teamPerf, setTeamPerf] = useState<any>(null);
-    const toastsFiredRef = useRef(false);
+    const lastSeenIdsRef = useRef<Set<string>>(new Set());
 
-    // Fetch team performance data from sidecar (same as team-performance page)
-    useEffect(() => {
+    const load = useCallback(async () => {
         if (!isAdmin) return;
-        const today = new Date().toISOString().split('T')[0];
         const token = localStorage.getItem('helix_access_token') ?? '';
-        fetch(`${API_URL}/api/supervisor/team-performance?date=${today}`, {
-            headers: { Authorization: `Bearer ${token}` },
-        })
-            .then(r => r.ok ? r.json() : null)
-            .then(data => setTeamPerf(data))
-            .catch(() => {});
+        try {
+            const res = await fetch(`${API_URL}/api/supervisor/performance-alerts`, {
+                headers: { Authorization: `Bearer ${token}` },
+            });
+            if (!res.ok) return;
+            const json = await res.json();
+            const list: PerformanceAlert[] = (json?.alerts ?? []).map((a: any) => ({
+                id: a.id,
+                agent: a.agent,
+                agentId: a.agentId ?? null,
+                type: a.type,
+                value: a.value ?? '',
+                severity: sevToFront(a.severity),
+                message: a.message,
+                firedAt: a.firedAt,
+                dismissed: false,
+            }));
+            setAlerts(list);
+
+            // Toast for newly arrived alerts
+            const fresh = list.filter((a) => !lastSeenIdsRef.current.has(a.id));
+            if (fresh.length > 0 && lastSeenIdsRef.current.size > 0) {
+                notify.error('Performance Alerts', `${fresh.length} new alert(s)`);
+            }
+            lastSeenIdsRef.current = new Set(list.map((a) => a.id));
+        } catch {
+            // Silent — sidecar may be temporarily down
+        }
     }, [isAdmin]);
 
-    // Compute alerts from team performance + entity data
-    useMemo(() => {
-        if (!isAdmin || !teamPerf?.agents) return;
-
-        const parseTime = (t: string): number => {
-            const parts = t.split(':').map(Number);
-            return (parts[0] ?? 0) * 3600 + (parts[1] ?? 0) * 60 + (parts[2] ?? 0);
-        };
-
-        const list: PerformanceAlert[] = [];
-        let idx = 0;
-
-        for (const agent of teamPerf.agents) {
-            const agentCalls = calls.filter((c) => {
-                if (c.agentId && agent.id && c.agentId === agent.id) return true;
-                if (!c.agentId && (c.agentName === agent.name || c.agentName === agent.ozonetelAgentId)) return true;
-                return false;
-            });
-            const totalCalls = agentCalls.length;
-            const agentAppts = agentCalls.filter((c: any) => c.disposition === 'APPOINTMENT_BOOKED').length;
-            const convPercent = totalCalls > 0 ? Math.round((agentAppts / totalCalls) * 100) : 0;
-
-            const tb = agent.timeBreakdown;
-            const idleMinutes = tb ? Math.round(parseTime(tb.totalIdleTime ?? '0:0:0') / 60) : 0;
-
-            if (agent.maxIdleMinutes && idleMinutes > agent.maxIdleMinutes) {
-                list.push({ id: `idle-${idx++}`, agent: agent.name ?? agent.ozonetelAgentId, type: 'Excessive Idle Time', value: `${idleMinutes}m`, severity: 'error', dismissed: false });
-            }
-            if (agent.minNpsThreshold && (agent.npsScore ?? 100) < agent.minNpsThreshold) {
-                list.push({ id: `nps-${idx++}`, agent: agent.name ?? agent.ozonetelAgentId, type: 'Low NPS', value: String(agent.npsScore ?? 0), severity: 'warning', dismissed: false });
-            }
-            if (agent.minConversionPercent && convPercent < agent.minConversionPercent) {
-                list.push({ id: `conv-${idx++}`, agent: agent.name ?? agent.ozonetelAgentId, type: 'Low Conversion', value: `${convPercent}%`, severity: 'warning', dismissed: false });
-            }
-        }
-
-        setAlerts(list);
-    }, [isAdmin, teamPerf, calls, leads]);
-
-    // Fire toasts once when alerts first load
     useEffect(() => {
-        if (toastsFiredRef.current || alerts.length === 0) return;
-        toastsFiredRef.current = true;
+        if (!isAdmin) return;
+        load();
+        const id = setInterval(load, POLL_INTERVAL_MS);
+        return () => clearInterval(id);
+    }, [isAdmin, load]);
 
-        const idleCount = alerts.filter(a => a.type === 'Excessive Idle Time').length;
-        const npsCount = alerts.filter(a => a.type === 'Low NPS').length;
-        const convCount = alerts.filter(a => a.type === 'Low Conversion').length;
-
-        const parts: string[] = [];
-        if (idleCount > 0) parts.push(`${idleCount} excessive idle`);
-        if (npsCount > 0) parts.push(`${npsCount} low NPS`);
-        if (convCount > 0) parts.push(`${convCount} low conversion`);
-
-        if (parts.length > 0) {
-            notify.error('Performance Alerts', `${alerts.length} alert(s): ${parts.join(', ')}`);
+    const dismiss = useCallback(async (id: string) => {
+        // Optimistic
+        setAlerts((prev) => prev.filter((a) => a.id !== id));
+        const token = localStorage.getItem('helix_access_token') ?? '';
+        try {
+            await fetch(`${API_URL}/api/supervisor/performance-alerts/${id}/dismiss`, {
+                method: 'POST',
+                headers: { Authorization: `Bearer ${token}` },
+            });
+        } catch {
+            // Reload on failure to restore truth
+            load();
         }
-    }, [alerts]);
+    }, [load]);
 
-    const dismiss = (id: string) => {
-        setAlerts(prev => prev.map(a => a.id === id ? { ...a, dismissed: true } : a));
-    };
+    const dismissAll = useCallback(async () => {
+        setAlerts([]);
+        const token = localStorage.getItem('helix_access_token') ?? '';
+        try {
+            await fetch(`${API_URL}/api/supervisor/performance-alerts/dismiss-all`, {
+                method: 'POST',
+                headers: { Authorization: `Bearer ${token}` },
+            });
+        } catch {
+            load();
+        }
+    }, [load]);
 
-    const dismissAll = () => {
-        setAlerts(prev => prev.map(a => ({ ...a, dismissed: true })));
-    };
-
-    const activeAlerts = alerts.filter(a => !a.dismissed);
-
-    return { alerts: activeAlerts, allAlerts: alerts, dismiss, dismissAll };
+    return { alerts, allAlerts: alerts, dismiss, dismissAll };
 };