diff --git a/backend/src/auth/RIGHTS.ts b/backend/src/auth/RIGHTS.ts
index f40088779..57401d361 100644
--- a/backend/src/auth/RIGHTS.ts
+++ b/backend/src/auth/RIGHTS.ts
@@ -24,6 +24,7 @@ export enum RIGHTS {
   QUERY_TRANSACTION_LINK = 'QUERY_TRANSACTION_LINK',
   REDEEM_TRANSACTION_LINK = 'REDEEM_TRANSACTION_LINK',
   LIST_TRANSACTION_LINKS = 'LIST_TRANSACTION_LINKS',
+  GDT_SUM = 'GDT_SUM',
   // Admin
   SEARCH_USERS = 'SEARCH_USERS',
   CREATE_PENDING_CREATION = 'CREATE_PENDING_CREATION',
diff --git a/backend/src/auth/ROLES.ts b/backend/src/auth/ROLES.ts
index 82c689848..5cb8f833a 100644
--- a/backend/src/auth/ROLES.ts
+++ b/backend/src/auth/ROLES.ts
@@ -22,6 +22,7 @@ export const ROLE_USER = new Role('user', [
   RIGHTS.DELETE_TRANSACTION_LINK,
   RIGHTS.REDEEM_TRANSACTION_LINK,
   RIGHTS.LIST_TRANSACTION_LINKS,
+  RIGHTS.GDT_SUM,
 ])
 export const ROLE_ADMIN = new Role('admin', Object.values(RIGHTS)) // all rights
 
diff --git a/backend/src/graphql/resolver/GdtResolver.ts b/backend/src/graphql/resolver/GdtResolver.ts
index 26ae9b210..302b17a4a 100644
--- a/backend/src/graphql/resolver/GdtResolver.ts
+++ b/backend/src/graphql/resolver/GdtResolver.ts
@@ -13,13 +13,11 @@ import { RIGHTS } from '@/auth/RIGHTS'
 export class GdtResolver {
   @Authorized([RIGHTS.LIST_GDT_ENTRIES])
   @Query(() => GdtEntryList)
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   async listGDTEntries(
     @Args()
     { currentPage = 1, pageSize = 5, order = Order.DESC }: Paginated,
     @Ctx() context: any,
   ): Promise<GdtEntryList> {
-    // load user
     const userEntity = context.user
 
     try {
@@ -35,6 +33,25 @@ export class GdtResolver {
     }
   }
 
+  @Authorized([RIGHTS.GDT_SUM])
+  @Query(() => Number | null)
+  async gdtSum(@Ctx() context: any): Promise<number | null> {
+    const { user } = context
+    try {
+      const resultGDTSum = await apiPost(`${CONFIG.GDT_API_URL}/GdtEntries/sumPerEmailApi`, {
+        email: user.email,
+      })
+      if (!resultGDTSum.success) {
+        throw new Error('Call not successful')
+      }
+      return Number(resultGDTSum.data.sum) || 0
+    } catch (err: any) {
+      // eslint-disable-next-line no-console
+      console.log('Could not query GDT Server', err)
+      return null
+    }
+  }
+
   @Authorized([RIGHTS.EXIST_PID])
   @Query(() => Number)
   // eslint-disable-next-line @typescript-eslint/no-explicit-any