diff --git a/pkiintergration-fe/src/services/operation.service.ts b/pkiintergration-fe/src/services/operation.service.ts
new file mode 100644
index 0000000..ba41c98
--- /dev/null
+++ b/pkiintergration-fe/src/services/operation.service.ts
@@ -0,0 +1,19 @@
+import { Injectable } from '@angular/core';
+import { IOperation } from '@c8y/client';
+import { OperationService } from '@c8y/ngx-components/api';
+
+@Injectable({ providedIn: 'root' })
+export class yourService {
+  constructor(private operationService: OperationService) {}
+
+  async requestPubKey(deviceId: string): Promise<IOperation> {
+    // http://resources.cumulocity.com/documentation/websdk/client/interfaces/ioperation.html
+    const operation: IOperation = {
+      request_pubkey: {},
+      deviceId
+    };
+    // http://resources.cumulocity.com/documentation/websdk/client/classes/operationservice.html#create
+    const { res, data } = await this.operationService.create(operation);
+    return data;
+  }
+}