diff --git a/slauth.h b/slauth.h
index c75c71c..2bae3ee 100644
--- a/slauth.h
+++ b/slauth.h
@@ -305,3 +305,7 @@ struct AuthenticatorRequestResponse *generate_credential_request_response(const
 struct Buffer get_auth_data_from_response(struct AuthenticatorRequestResponse *res);
 
 struct Buffer get_signature_from_response(struct AuthenticatorRequestResponse *res);
+
+char *get_error_message(struct AuthenticatorRequestResponse *res);
+
+bool is_success(struct AuthenticatorRequestResponse *res);