diff --git a/ui/src/api/queries/alerts.ts b/ui/src/api/queries/alerts.ts
index eab53cb0..72fd04a0 100644
--- a/ui/src/api/queries/alerts.ts
+++ b/ui/src/api/queries/alerts.ts
@@ -11,6 +11,8 @@ type AlertSeverity = NonNullable<AlertDto['severity']>;
 export interface AlertsFilter {
   state?: AlertState | AlertState[];
   severity?: AlertSeverity | AlertSeverity[];
+  acked?: boolean;
+  read?: boolean;
   ruleId?: string;
   limit?: number;
 }
@@ -47,7 +49,7 @@ export function useAlerts(filter: AlertsFilter = {}) {
   const severityKey = severityArr ? [...severityArr].sort() : null;
 
   return useQuery({
-    queryKey: ['alerts', env, 'list', fetchLimit, stateKey, severityKey],
+    queryKey: ['alerts', env, 'list', fetchLimit, stateKey, severityKey, filter.acked ?? null, filter.read ?? null],
     enabled: !!env,
     refetchInterval: 30_000,
     refetchIntervalInBackground: false,
@@ -56,6 +58,8 @@ export function useAlerts(filter: AlertsFilter = {}) {
       const query: Record<string, unknown> = { limit: fetchLimit };
       if (stateArr && stateArr.length > 0) query.state = stateArr;
       if (severityArr && severityArr.length > 0) query.severity = severityArr;
+      if (filter.acked !== undefined) query.acked = filter.acked;
+      if (filter.read !== undefined) query.read = filter.read;
       const { data, error } = await apiClient.GET(
         '/environments/{envSlug}/alerts',
         {
@@ -180,3 +184,80 @@ export function useBulkReadAlerts() {
     },
   });
 }
+
+/** Acknowledge a batch of alert instances. */
+export function useBulkAckAlerts() {
+  const env = useSelectedEnv();
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: async (ids: string[]) => {
+      if (!env) throw new Error('no env');
+      const { error } = await apiClient.POST(
+        '/environments/{envSlug}/alerts/bulk-ack',
+        { params: { path: { envSlug: env } }, body: { instanceIds: ids } } as any,
+      );
+      if (error) throw error;
+    },
+    onSuccess: () => qc.invalidateQueries({ queryKey: ['alerts', env] }),
+  });
+}
+
+/** Delete (soft) a single alert instance. */
+export function useDeleteAlert() {
+  const env = useSelectedEnv();
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: async (id: string) => {
+      if (!env) throw new Error('no env');
+      const { error } = await apiClient.DELETE(
+        '/environments/{envSlug}/alerts/{id}',
+        { params: { path: { envSlug: env, id } } } as any,
+      );
+      if (error) throw error;
+    },
+    onSuccess: () => {
+      qc.invalidateQueries({ queryKey: ['alerts', env] });
+      qc.invalidateQueries({ queryKey: ['alerts', env, 'unread-count'] });
+    },
+  });
+}
+
+/** Delete (soft) a batch of alert instances. */
+export function useBulkDeleteAlerts() {
+  const env = useSelectedEnv();
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: async (ids: string[]) => {
+      if (!env) throw new Error('no env');
+      const { error } = await apiClient.POST(
+        '/environments/{envSlug}/alerts/bulk-delete',
+        { params: { path: { envSlug: env } }, body: { instanceIds: ids } } as any,
+      );
+      if (error) throw error;
+    },
+    onSuccess: () => {
+      qc.invalidateQueries({ queryKey: ['alerts', env] });
+      qc.invalidateQueries({ queryKey: ['alerts', env, 'unread-count'] });
+    },
+  });
+}
+
+/** Restore a soft-deleted alert instance. */
+export function useRestoreAlert() {
+  const env = useSelectedEnv();
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: async (id: string) => {
+      if (!env) throw new Error('no env');
+      const { error } = await apiClient.POST(
+        '/environments/{envSlug}/alerts/{id}/restore',
+        { params: { path: { envSlug: env, id } } } as any,
+      );
+      if (error) throw error;
+    },
+    onSuccess: () => {
+      qc.invalidateQueries({ queryKey: ['alerts', env] });
+      qc.invalidateQueries({ queryKey: ['alerts', env, 'unread-count'] });
+    },
+  });
+}