diff --git a/wwwroot/inference.dspy b/wwwroot/inference.dspy
index be50337..c61615f 100644
--- a/wwwroot/inference.dspy
+++ b/wwwroot/inference.dspy
@@ -1,5 +1,8 @@
 llmid = params_kw.llmid
 params_kw.stream = False
+userid = await get_user()
+if not userid:
+	return UiError(title="Error", message="You need to login to use it")
 engine = IndustrialSkillEngine(request, llmid)
 f = partial(engine.reference, params_kw)
 return await stream_response(request, f)