diff --git a/api-v3/src/inspection-findings/finding-catalog.controller.ts b/api-v3/src/inspection-findings/finding-catalog.controller.ts
index 178cee3..57833fd 100644
--- a/api-v3/src/inspection-findings/finding-catalog.controller.ts
+++ b/api-v3/src/inspection-findings/finding-catalog.controller.ts
@@ -6,15 +6,22 @@ import { CreateFindingCatalogItemDto } from './dto/create-finding-catalog-item.d
 import { CreateFindingCategoryDto } from './dto/create-finding-category.dto';
 import { ListFindingCatalogProposalsQueryDto } from './dto/list-finding-catalog-proposals-query.dto';
 import { ListFindingCatalogQueryDto } from './dto/list-finding-catalog-query.dto';
+import { MergeFindingCatalogItemDto } from './dto/merge-finding-catalog-item.dto';
 import { ReplaceFindingCatalogSelectionDto } from './dto/replace-finding-catalog-selection.dto';
 import { ReviewFindingCatalogProposalDto } from './dto/review-finding-catalog-proposal.dto';
 import { UpdateFindingCatalogItemDto } from './dto/update-finding-catalog-item.dto';
 import { UpdateFindingCategoryDto } from './dto/update-finding-category.dto';
+import { F3FindingCatalogResolverService } from './f3-finding-catalog-resolver.service';
+import { FindingCatalogMergeService } from './finding-catalog-merge.service';
 import { FindingCatalogService } from './finding-catalog.service';
 
 @Controller('finding-catalog')
 export class FindingCatalogController {
-  constructor(private readonly catalog: FindingCatalogService) {}
+  constructor(
+    private readonly catalog: FindingCatalogService,
+    private readonly applicableCatalog: F3FindingCatalogResolverService,
+    private readonly catalogMerges: FindingCatalogMergeService,
+  ) {}
 
   @Get()
   @RequirePermissions('finding_catalog.read')
@@ -27,8 +34,8 @@ export class FindingCatalogController {
   applicable(
     @Param('assetId', new ParseUUIDPipe({ version: '4' })) assetId: string,
     @Query() query: ListFindingCatalogQueryDto,
-  ) {
-    return this.catalog.listApplicableForAsset(assetId, query);
+  ): Promise<unknown> {
+    return this.applicableCatalog.listApplicableForAsset(assetId, query);
   }
 
   @Get('admin')
@@ -123,6 +130,25 @@ export class FindingCatalogController {
     return this.catalog.createItem(dto, principal, request);
   }
 
+  @Get('items/:id/merge-status')
+  @RequirePermissions('finding_catalog.manage')
+  mergeStatus(
+    @Param('id', new ParseUUIDPipe({ version: '4' })) id: string,
+  ): Promise<unknown> {
+    return this.catalogMerges.status(id);
+  }
+
+  @Post('items/:id/merge')
+  @RequirePermissions('finding_catalog.manage')
+  mergeItem(
+    @Param('id', new ParseUUIDPipe({ version: '4' })) id: string,
+    @Body() dto: MergeFindingCatalogItemDto,
+    @CurrentAuth() principal: AuthPrincipal,
+    @Req() request: RequestWithContext,
+  ): Promise<unknown> {
+    return this.catalogMerges.merge(id, dto, principal, request);
+  }
+
   @Patch('items/:id')
   @RequirePermissions('finding_catalog.manage')
   updateItem(