diff --git a/web/grpc/identity-service-helper.js b/web/grpc/identity-service-helper.js
new file mode 100644
--- /dev/null
+++ b/web/grpc/identity-service-helper.js
@@ -0,0 +1,32 @@
+// @flow
+
+import type { SignedPrekeys } from 'lib/types/crypto-types.js';
+
+import type { IdentityServiceClientWrapper } from './identity-service-client-wrapper.js';
+import * as IdentityAuthStructs from '../protobufs/identity-auth-structs.cjs';
+import { Prekey } from '../protobufs/identity-unauth-structs.cjs';
+
+async function publishPrekeysToIdentity(
+  prekeys: SignedPrekeys,
+  client: IdentityServiceClientWrapper,
+) {
+  const authClient = client.authClient;
+  if (!authClient) {
+    throw new Error('Identity service client is not initialized');
+  }
+
+  const contentPrekeyUpload = new Prekey();
+  contentPrekeyUpload.setPrekey(prekeys.contentPrekey);
+  contentPrekeyUpload.setPrekeySignature(prekeys.contentPrekeySignature);
+
+  const notifPrekeyUpload = new Prekey();
+  notifPrekeyUpload.setPrekey(prekeys.notifPrekey);
+  notifPrekeyUpload.setPrekeySignature(prekeys.notifPrekeySignature);
+
+  const request = new IdentityAuthStructs.RefreshUserPrekeysRequest();
+  request.setNewContentPrekeys(contentPrekeyUpload);
+  request.setNewNotifPrekeys(notifPrekeyUpload);
+  await authClient.refreshUserPrekeys(request);
+}
+
+export { publishPrekeysToIdentity };