Update tools.py

tools.py

@@ -1,7 +1,11 @@
+from langchain.tools import tool
 from langchain_community.tools.ddg_search import DuckDuckGoSearchRun
 
-# Add more tools here later (e.g., calculator, file loader, etc.)
+search = DuckDuckGoSearchRun()
 
-def get_tools():
-    search = DuckDuckGoSearchRun()
-    return [search]
+@tool
+def web_search(query: str) -> str:
+    """Perform a web search using DuckDuckGo."""
+    return search.run(query)
+
+tools = [web_search]