diff --git a/mnemo_cards_admin/src/components/PackCardsManager.tsx b/mnemo_cards_admin/src/components/PackCardsManager.tsx
index 0a47f27..efed9a9 100644
--- a/mnemo_cards_admin/src/components/PackCardsManager.tsx
+++ b/mnemo_cards_admin/src/components/PackCardsManager.tsx
@@ -31,8 +31,8 @@ export function PackCardsManager({
 
   // Load all cards with search
   const { data: cardsData, isLoading } = useQuery({
-    queryKey: ['cards', 1, 1000, search], // Large limit to get all cards
-    queryFn: () => cardsApi.getCards({ page: 1, limit: 1000, search }),
+    queryKey: ['cards', 1, 100, search], // Limit to 100 (backend max)
+    queryFn: () => cardsApi.getCards({ page: 1, limit: 100, search }),
     enabled: !disabled,
   })
 
diff --git a/mnemo_cards_backend/lib/api/v2/admin_cards_api_v2.dart b/mnemo_cards_backend/lib/api/v2/admin_cards_api_v2.dart
index 844d4b1..6bfe9aa 100644
--- a/mnemo_cards_backend/lib/api/v2/admin_cards_api_v2.dart
+++ b/mnemo_cards_backend/lib/api/v2/admin_cards_api_v2.dart
@@ -58,17 +58,8 @@ class AdminCardsApiV2 {
           headers: {'Content-Type': 'application/json'},
         );
       }
-      if (limit < 1 || limit > 100) {
-        return Response.badRequest(
-          body: json.encode({
-            'error': 'Invalid limit parameter',
-            'message': 'Limit must be between 1 and 100. Received: $limit',
-            'field': 'limit',
-            'details': 'The maximum number of items per page is 100. Please use a value between 1 and 100.',
-          }),
-          headers: {'Content-Type': 'application/json'},
-        );
-      }
+      // Limit validation: if limit is invalid, set to default; if > 100, cap at 100
+      final validatedLimit = limit < 1 ? 20 : (limit > 100 ? 100 : limit);
 
       // Get all cards
       final allCards = await _db.packDao.getAllCards();
@@ -87,9 +78,9 @@ class AdminCardsApiV2 {
 
       // Calculate pagination
       final total = filteredCards.length;
-      final totalPages = (total / limit).ceil();
-      final offset = (page - 1) * limit;
-      final paginatedCards = filteredCards.skip(offset).take(limit).toList();
+      final totalPages = (total / validatedLimit).ceil();
+      final offset = (page - 1) * validatedLimit;
+      final paginatedCards = filteredCards.skip(offset).take(validatedLimit).toList();
 
       // Получить паки для всех карточек (для packId)
       final cardsWithPacks = <Map<String, dynamic>>[];
@@ -116,7 +107,7 @@ class AdminCardsApiV2 {
           'items': cardsWithPacks,
           'total': total,
           'page': page,
-          'limit': limit,
+          'limit': validatedLimit,
           'totalPages': totalPages,
         }),
         headers: {'Content-Type': 'application/json'},
diff --git a/mnemo_cards_backend/lib/api/v2/admin_packs_api_v2.dart b/mnemo_cards_backend/lib/api/v2/admin_packs_api_v2.dart
index 8af4a78..0f6b9c8 100644
--- a/mnemo_cards_backend/lib/api/v2/admin_packs_api_v2.dart
+++ b/mnemo_cards_backend/lib/api/v2/admin_packs_api_v2.dart
@@ -76,17 +76,8 @@ class AdminPacksApiV2 {
           statusCode: 400,
         );
       }
-      if (limit < 1 || limit > 100) {
-        return _json(
-          {
-            'error': 'Invalid limit parameter',
-            'message': 'Limit must be between 1 and 100. Received: $limit',
-            'field': 'limit',
-            'details': 'The maximum number of items per page is 100. Please use a value between 1 and 100.',
-          },
-          statusCode: 400,
-        );
-      }
+      // Limit validation: if limit is invalid, set to default; if > 100, cap at 100
+      final validatedLimit = limit < 1 ? 20 : (limit > 100 ? 100 : limit);
 
       // Get all packs
       final allPacks = await _db.packDao.getAllPacks(
@@ -124,15 +115,15 @@ class AdminPacksApiV2 {
 
       // Calculate pagination
       final total = previewDtos.length;
-      final totalPages = (total / limit).ceil();
-      final offset = (page - 1) * limit;
-      final paginatedPacks = previewDtos.skip(offset).take(limit).toList();
+      final totalPages = (total / validatedLimit).ceil();
+      final offset = (page - 1) * validatedLimit;
+      final paginatedPacks = previewDtos.skip(offset).take(validatedLimit).toList();
 
       return _json({
         'items': paginatedPacks,
         'total': total,
         'page': page,
-        'limit': limit,
+        'limit': validatedLimit,
         'totalPages': totalPages,
       });
     } catch (e, s) {
diff --git a/mnemo_cards_backend/lib/api/v2/tests_api_v2.dart b/mnemo_cards_backend/lib/api/v2/tests_api_v2.dart
index 4287d19..f50cfaf 100644
--- a/mnemo_cards_backend/lib/api/v2/tests_api_v2.dart
+++ b/mnemo_cards_backend/lib/api/v2/tests_api_v2.dart
@@ -170,9 +170,8 @@ class TestsApiV2 {
       if (page < 1) {
         return _badRequest('Page must be greater than 0');
       }
-      if (limit < 1 || limit > 100) {
-        return _badRequest('Limit must be between 1 and 100');
-      }
+      // Limit validation: if limit is invalid, set to default; if > 100, cap at 100
+      final validatedLimit = limit < 1 ? 20 : (limit > 100 ? 100 : limit);
 
       if (user.id == null) {
         return _unauthorized('User ID is required');
@@ -186,7 +185,7 @@ class TestsApiV2 {
           'items': [],
           'total': 0,
           'page': page,
-          'limit': limit,
+          'limit': validatedLimit,
           'totalPages': 0,
         });
       }
@@ -213,15 +212,15 @@ class TestsApiV2 {
 
       // Apply pagination
       final total = attempts.length;
-      final totalPages = (total / limit).ceil();
-      final offset = (page - 1) * limit;
-      final paginatedAttempts = attempts.skip(offset).take(limit).toList();
+      final totalPages = (total / validatedLimit).ceil();
+      final offset = (page - 1) * validatedLimit;
+      final paginatedAttempts = attempts.skip(offset).take(validatedLimit).toList();
 
       return _ok({
         'items': paginatedAttempts,
         'total': total,
         'page': page,
-        'limit': limit,
+        'limit': validatedLimit,
         'totalPages': totalPages,
       });
     } catch (e, s) {