diff --git a/admin-compliance/app/sdk/catalog-manager/page.tsx b/admin-compliance/app/sdk/catalog-manager/page.tsx
new file mode 100644
index 0000000..6d2f46d
--- /dev/null
+++ b/admin-compliance/app/sdk/catalog-manager/page.tsx
@@ -0,0 +1,7 @@
+'use client'
+
+import CatalogManagerContent from '@/components/catalog-manager/CatalogManagerContent'
+
+export default function CatalogManagerPage() {
+  return <CatalogManagerContent />
+}
diff --git a/admin-compliance/components/sdk/Sidebar/SDKSidebar.tsx b/admin-compliance/components/sdk/Sidebar/SDKSidebar.tsx
index 2ceb81b..d8dd61e 100644
--- a/admin-compliance/components/sdk/Sidebar/SDKSidebar.tsx
+++ b/admin-compliance/components/sdk/Sidebar/SDKSidebar.tsx
@@ -590,6 +590,18 @@ export function SDKSidebar({ collapsed = false, onCollapsedChange }: SDKSidebarP
             isActive={pathname === '/sdk/architecture'}
             collapsed={collapsed}
           />
+          <AdditionalModuleItem
+            href="/sdk/catalog-manager"
+            icon={
+              <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
+                  d="M4 7v10c0 2.21 3.582 4 8 4s8-1.79 8-4V7M4 7c0 2.21 3.582 4 8 4s8-1.79 8-4M4 7c0-2.21 3.582-4 8-4s8 1.79 8 4m0 5c0 2.21-3.582 4-8 4s-8-1.79-8-4" />
+              </svg>
+            }
+            label="Kataloge"
+            isActive={pathname === '/sdk/catalog-manager'}
+            collapsed={collapsed}
+          />
           <AdditionalModuleItem
             href="https://macmini:3006"
             icon={
diff --git a/admin-compliance/lib/sdk/context.tsx b/admin-compliance/lib/sdk/context.tsx
index 601e460..2ba7225 100644
--- a/admin-compliance/lib/sdk/context.tsx
+++ b/admin-compliance/lib/sdk/context.tsx
@@ -113,6 +113,9 @@ const initialState: SDKState = {
   securityIssues: [],
   securityBacklog: [],
 
+  // Catalog Manager
+  customCatalogs: {},
+
   // UI State
   commandBarHistory: [],
   recentSearches: [],
@@ -433,6 +436,41 @@ function sdkReducer(state: SDKState, action: ExtendedSDKAction): SDKState {
         preferences: { ...state.preferences, ...action.payload },
       })
 
+    case 'ADD_CUSTOM_CATALOG_ENTRY': {
+      const entry = action.payload
+      const existing = state.customCatalogs[entry.catalogId] || []
+      return updateState({
+        customCatalogs: {
+          ...state.customCatalogs,
+          [entry.catalogId]: [...existing, entry],
+        },
+      })
+    }
+
+    case 'UPDATE_CUSTOM_CATALOG_ENTRY': {
+      const { catalogId, entryId, data } = action.payload
+      const entries = state.customCatalogs[catalogId] || []
+      return updateState({
+        customCatalogs: {
+          ...state.customCatalogs,
+          [catalogId]: entries.map(e =>
+            e.id === entryId ? { ...e, data: { ...e.data, ...data }, updatedAt: new Date().toISOString() } : e
+          ),
+        },
+      })
+    }
+
+    case 'DELETE_CUSTOM_CATALOG_ENTRY': {
+      const { catalogId, entryId } = action.payload
+      const items = state.customCatalogs[catalogId] || []
+      return updateState({
+        customCatalogs: {
+          ...state.customCatalogs,
+          [catalogId]: items.filter(e => e.id !== entryId),
+        },
+      })
+    }
+
     case 'RESET_STATE':
       return { ...initialState, lastModified: new Date() }
 
diff --git a/admin-compliance/lib/sdk/types.ts b/admin-compliance/lib/sdk/types.ts
index e517d53..1b78322 100644
--- a/admin-compliance/lib/sdk/types.ts
+++ b/admin-compliance/lib/sdk/types.ts
@@ -5,6 +5,8 @@
  * checkpoint system, and all compliance-related data structures.
  */
 
+import type { CustomCatalogs, CatalogId, CustomCatalogEntry } from './catalog-manager/types'
+
 // =============================================================================
 // ENUMS
 // =============================================================================
@@ -1536,6 +1538,9 @@ export interface SDKState {
   securityIssues: SecurityIssue[]
   securityBacklog: BacklogItem[]
 
+  // Catalog Manager
+  customCatalogs: CustomCatalogs
+
   // UI State
   commandBarHistory: CommandHistory[]
   recentSearches: string[]
@@ -1621,6 +1626,9 @@ export type SDKAction =
   | { type: 'UPDATE_BACKLOG_ITEM'; payload: { id: string; data: Partial<BacklogItem> } }
   | { type: 'ADD_COMMAND_HISTORY'; payload: CommandHistory }
   | { type: 'SET_PREFERENCES'; payload: Partial<UserPreferences> }
+  | { type: 'ADD_CUSTOM_CATALOG_ENTRY'; payload: CustomCatalogEntry }
+  | { type: 'UPDATE_CUSTOM_CATALOG_ENTRY'; payload: { catalogId: CatalogId; entryId: string; data: Record<string, unknown> } }
+  | { type: 'DELETE_CUSTOM_CATALOG_ENTRY'; payload: { catalogId: CatalogId; entryId: string } }
   | { type: 'RESET_STATE' }
 
 // =============================================================================