Update agent.py

agent.py

@@ -1,4 +1,6 @@
 import os
+import time
+
 from langgraph.graph import START, StateGraph, MessagesState
 from langgraph.prebuilt import tools_condition
 from langgraph.prebuilt import ToolNode
@@ -103,8 +105,10 @@ def build_graph(provider: str = "google"):
   llm_with_tools = llm.bind_tools(tools)
 
   def assistant(state: MessagesState):
-    """ Use the tools to answer the query. you have add,subtract,multiply,divide,web_search,wikipedia_search,arxiv_search tools."""
-    return {"messages": state["messages"] + [llm_with_tools.invoke([system_message]+state["messages"])]}
+      """ 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)]}
 
 
   builder = StateGraph(MessagesState)