Update app.py

app.py

@@ -144,7 +144,7 @@ class ToolRegistry:
     def load_web_tools(model, browser, text_limit=20000):
         """Initialize and return web-related tools."""
         return [
-            GoogleSearchTool(),
+            GoogleSearchTool(provider=serper),
             VisitTool(browser),
             PageUpTool(browser),
             PageDownTool(browser),