diff --git a/frontend/src/lib/shared/api.server.ts b/frontend/src/lib/shared/api.server.ts
index 126834ba..b1aab396 100644
--- a/frontend/src/lib/shared/api.server.ts
+++ b/frontend/src/lib/shared/api.server.ts
@@ -23,3 +23,12 @@ export function createApiClient(fetch: typeof globalThis.fetch) {
 		fetch
 	});
 }
+
+export interface ApiError {
+	code?: string;
+	message?: string;
+}
+
+export function extractErrorCode(error: unknown): string | undefined {
+	return (error as ApiError | undefined)?.code;
+}