diff --git a/app/main.py b/app/main.py
index ffdd96b..800f6c8 100644
--- a/app/main.py
+++ b/app/main.py
@@ -17,6 +17,7 @@ async def get_widgets(request):
     else:
         return web.Response(text=f"no subscribers")
 
+
 @routes.get('/subscribe/{widget_id}')
 async def subscribe(request):
     """
@@ -25,11 +26,13 @@ async def subscribe(request):
     widget_id = request.match_info['widget_id']
     url = request.query['url']
     success = toonat.add_subscriber(widget_id, url)
+
     if success:
-        return web.Response(text=f"Subscribed to widget ID {widget_id} with URL {url}.")
+        return web.Response(text=f"Subscribed to widget ID {success} with URL {url}.")
     else:
         return web.Response(text=f"Already subscribed to widget ID {widget_id} with URL {url}.")
 
+
 @routes.get('/unsubscribe/{widget_id}')
 async def unsubscribe(request):
     """
@@ -38,21 +41,24 @@ async def unsubscribe(request):
     widget_id = request.match_info['widget_id']
     url = request.query['url']
     success = toonat.remove_subscriber(widget_id, url)
+
     if success:
-        return web.Response(text=f"Unsubscribed from widget ID {widget_id} with URL {url}.")
+        return web.Response(text=f"Unsubscribed from widget ID {success} with URL {url}.")
     else:
         return web.Response(text=f"Not subscribed to widget ID {widget_id} with URL {url}.")
 
+
 @routes.get('/get_widgets')
 async def get_widgets(request):
     """
     현재 설정된 모든 위젯 ID 목록을 반환하는 웹 API 엔드포인트입니다.
     """
     widget_ids = toonat.get_widget_ids()
+
     if widget_ids:
         return web.json_response(widget_ids)
     else:
-        return web.Response(text=f"no widget_ids")
+        return web.Response(text=f"widget ids empty")
 
 
 @routes.get('/add_widget')
@@ -62,8 +68,13 @@ async def add_widget(request):
     widget_id: 추가할 위젯 ID
     """
     widget_id = request.query['widget_id']
-    await toonat.add_widget_and_start_fetching_notifications(widget_id)
-    return web.Response(text=f"Widget ID {widget_id} added and fetching started.")
+    success = await toonat.add_widget_and_start_fetching_notifications(widget_id)
+
+    if success:
+        return web.Response(text=f"Widget ID {success} added and fetching started.")
+    else:
+        return web.Response(text=f"no widget_ids")
+
 
 @routes.get('/remove_widget')
 async def remove_widget(request):
@@ -72,8 +83,13 @@ async def remove_widget(request):
     widget_id: 제거할 위젯 ID
     """
     widget_id = request.query['widget_id']
-    await toonat.remove_widget_and_stop_fetching_notifications(widget_id)
-    return web.Response(text=f"Widget ID {widget_id} removed and fetching stopped.")
+    success = await toonat.remove_widget_and_stop_fetching_notifications(widget_id)
+
+    if success:
+        return web.Response(text=f"Widget ID {success} removed and fetching stopped.")
+    else:
+        return web.Response(text=f"Not in widget list {widget_id}")
+
 
 @routes.get('/status')
 async def status(request):
@@ -106,7 +122,6 @@ async def main():
     await web_server_task
 
 
-
 if __name__ == "__main__":
     if not toonat.WIDGET_IDS:
         print("No widget ID found in settings.ini.")