diff --git a/backend/routes/character.js b/backend/routes/character.js
index e9451f0..7ddef1e 100644
--- a/backend/routes/character.js
+++ b/backend/routes/character.js
@@ -31,6 +31,10 @@ router.get('/search', async (req, res) => {
       character_image: basic.character_image,
     });
   } catch (err) {
+    const code = err.response?.data?.error?.name;
+    if (['OPENAPI00001', 'OPENAPI00007', 'OPENAPI00010', 'OPENAPI00011'].includes(code)) {
+      return res.status(503).json({ error: 'API 점검중입니다', code, maintenance: true });
+    }
     if (err.response?.status === 400) {
       return res.status(404).json({ error: '존재하지 않는 캐릭터입니다' });
     }
@@ -65,6 +69,10 @@ router.get('/symbols', async (req, res) => {
 
     res.json({ ocid, character_class: data.character_class, symbols: parsed });
   } catch (err) {
+    const code = err.response?.data?.error?.name;
+    if (['OPENAPI00001', 'OPENAPI00007', 'OPENAPI00010', 'OPENAPI00011'].includes(code)) {
+      return res.status(503).json({ error: 'API 점검중입니다', code, maintenance: true });
+    }
     console.error('심볼 조회 오류:', err.response?.data || err.message);
     res.status(500).json({ error: '심볼 조회 실패' });
   }
diff --git a/backend/routes/notices.js b/backend/routes/notices.js
index 6e926fe..6684525 100644
--- a/backend/routes/notices.js
+++ b/backend/routes/notices.js
@@ -23,6 +23,13 @@ router.get('/', async (req, res) => {
     });
     res.json(data);
   } catch (err) {
+    const errData = err.response?.data?.error;
+    const code = errData?.name;
+    // Nexon 점검 코드: OPENAPI00001(게임 점검), OPENAPI00007(api 점검), OPENAPI00011(오픈 API 점검)
+    const underMaintenance = ['OPENAPI00001', 'OPENAPI00007', 'OPENAPI00010', 'OPENAPI00011'].includes(code);
+    if (underMaintenance) {
+      return res.status(503).json({ error: 'API 점검중입니다', code, maintenance: true });
+    }
     console.error(`공지 조회 오류 (${type}):`, err.response?.data || err.message);
     res.status(500).json({ error: '공지 조회 실패' });
   }
diff --git a/frontend/src/api/client.js b/frontend/src/api/client.js
index 1e53ee1..0171bac 100644
--- a/frontend/src/api/client.js
+++ b/frontend/src/api/client.js
@@ -16,7 +16,9 @@ export async function api(url, options = {}) {
 
   if (!res.ok) {
     const error = await res.json().catch(() => ({}))
-    throw new Error(error.error || `HTTP ${res.status}`)
+    const e = new Error(error.error || `HTTP ${res.status}`)
+    Object.assign(e, error, { status: res.status })
+    throw e
   }
 
   return res.json()
diff --git a/frontend/src/components/NoticeWidget.jsx b/frontend/src/components/NoticeWidget.jsx
index 41df9b5..6484d76 100644
--- a/frontend/src/components/NoticeWidget.jsx
+++ b/frontend/src/components/NoticeWidget.jsx
@@ -93,11 +93,13 @@ export default function NoticeWidget() {
   const [expanded, setExpanded] = useState(false)
   const tab = TABS.find((t) => t.key === activeTab)
 
-  const { data, isLoading } = useQuery({
+  const { data, isLoading, error } = useQuery({
     queryKey: ['notices', activeTab],
     queryFn: () => api(`/api/notices?type=${activeTab}`),
     staleTime: 5 * 60 * 1000,
+    retry: (failureCount, err) => (err?.maintenance ? false : failureCount < 1),
   })
+  const isMaintenance = !!error?.maintenance
 
   const list = data?.[tab.dataKey] || []
   const allItems = tab.filterOngoing
@@ -148,6 +150,11 @@ export default function NoticeWidget() {
               <div key={i} className="h-24 rounded-lg bg-white/[0.02] animate-pulse" />
             ))}
           </div>
+        ) : isMaintenance ? (
+          <div className="py-12 text-center">
+            <div className="text-sm text-amber-300 font-medium">넥슨 Open API 점검중</div>
+            <div className="text-xs text-gray-500 mt-1">점검이 끝나면 다시 표시됩니다</div>
+          </div>
         ) : initialItems.length === 0 ? (
           <AnimatePresence mode="wait">
             <motion.div