Update app.py

app.py

@@ -114,6 +114,8 @@ def tool_node(state: AgentState) -> AgentState:
     tool_counter = state.get("tool_counter", 0)
     if tool_counter > 5:
         return {}
+    tool_counter += 1
+    state["tool_counter"] = tool_counter
     if state.get("wiki_query"):
         return wikipedia_search_tool(state)
     if state.get("web_search_query"):