diff --git a/src/Umbraco.Web.UI.Client/libs/repository/index.ts b/src/Umbraco.Web.UI.Client/libs/repository/index.ts
index 9dcba782ba..94fb4c295d 100644
--- a/src/Umbraco.Web.UI.Client/libs/repository/index.ts
+++ b/src/Umbraco.Web.UI.Client/libs/repository/index.ts
@@ -2,3 +2,4 @@ export * from './data-source';
 export * from './detail-repository.interface';
 export * from './tree-repository.interface';
 export * from './folder-repository.interface';
+export * from './item-repository.interface';
diff --git a/src/Umbraco.Web.UI.Client/libs/repository/item-repository.interface.ts b/src/Umbraco.Web.UI.Client/libs/repository/item-repository.interface.ts
new file mode 100644
index 0000000000..1afb646c9f
--- /dev/null
+++ b/src/Umbraco.Web.UI.Client/libs/repository/item-repository.interface.ts
@@ -0,0 +1,11 @@
+import type { Observable } from 'rxjs';
+import { ProblemDetailsModel } from '@umbraco-cms/backoffice/backend-api';
+
+export interface UmbItemRepository<ItemType> {
+	requestItems: (uniques: string[]) => Promise<{
+		data: Array<ItemType> | undefined;
+		error: ProblemDetailsModel | undefined;
+		asObservable?: () => Observable<Array<ItemType>>;
+	}>;
+	items: (uniques: string[]) => Promise<Observable<Array<ItemType>>>;
+}
diff --git a/src/Umbraco.Web.UI.Client/libs/repository/tree-repository.interface.ts b/src/Umbraco.Web.UI.Client/libs/repository/tree-repository.interface.ts
index 4ef19c3920..ea3f76cc71 100644
--- a/src/Umbraco.Web.UI.Client/libs/repository/tree-repository.interface.ts
+++ b/src/Umbraco.Web.UI.Client/libs/repository/tree-repository.interface.ts
@@ -17,7 +17,9 @@ export interface UmbTreeRepository<ItemType = any, PagedItemType = UmbPagedData<
 		error: ProblemDetailsModel | undefined;
 		asObservable?: () => Observable<ItemType[]>;
 	}>;
-	requestTreeItems: (uniques: string[]) => Promise<{
+
+	// TODO: remove this when all repositories are migrated to the new interface items interface
+	requestTreeItems?: (uniques: string[]) => Promise<{
 		data: Array<ItemType> | undefined;
 		error: ProblemDetailsModel | undefined;
 		asObservable?: () => Observable<ItemType[]>;
@@ -25,5 +27,7 @@ export interface UmbTreeRepository<ItemType = any, PagedItemType = UmbPagedData<
 
 	rootTreeItems: () => Promise<Observable<ItemType[]>>;
 	treeItemsOf: (parentUnique: string | null) => Promise<Observable<ItemType[]>>;
-	treeItems: (uniques: string[]) => Promise<Observable<ItemType[]>>;
+
+	// TODO: remove this when all repositories are migrated to the new items interface
+	treeItems?: (uniques: string[]) => Promise<Observable<ItemType[]>>;
 }