Update tools.py

tools.py

@@ -1,4 +1,3 @@
-"""Tool definitions for LangGraph agent."""
 from langchain_core.tools import tool
 from langchain_community.document_loaders import WikipediaLoader, ArxivLoader
 from langchain_community.tools.tavily_search import TavilySearchResults
@@ -48,5 +47,14 @@ def web_search(query: str) -> str:
     docs = TavilySearchResults(max_results=3).invoke(query=query)
     return "\n\n".join(doc.page_content for doc in docs)
 
-# Export list of all tools
-TOOLS = [multiply, add, subtract, divide, modulus, wiki_search, arxiv_search, web_search]
+# Tools as a dict for manual agent usage
+TOOLS = {
+    "multiply": multiply,
+    "add": add,
+    "subtract": subtract,
+    "divide": divide,
+    "modulus": modulus,
+    "wiki_search": wiki_search,
+    "arxiv_search": arxiv_search,
+    "web_search": web_search,
+}