Update agent.py

agent.py

@@ -108,7 +108,7 @@ def build_graph(provider: str = "google"):
       """ Use the tools to answer the query. you have add,subtract,multiply,divide,web_search,wikipedia_search,arxiv_search tools."""
       response = llm_with_tools.invoke([system_message]+state["messages"])
       time.sleep(5) # 무료 티어의 한계
-      return {"messages": state["messages"] + [response)]}
+      return {"messages": state["messages"] + [response]}
 
 
   builder = StateGraph(MessagesState)