Fix: updated tool names to use valid characters

agent.py

@@ -45,19 +45,19 @@ def logarithm(a: float, base: float = math.e) -> float:
 # Web Search Tools
 web_search_tool = Tool.from_function(
     func=DuckDuckGoSearchRun().run,
-    name="Web Search",
+    name="Web_Search",
     description="Search the internet for general-purpose queries."
 )
 
 wikipedia_tool = Tool.from_function(
     func=WikipediaAPIWrapper().run,
-    name="Wikipedia Search",
+    name="Wikipedia_Search",
     description="Search Wikipedia for factual or encyclopedic information."
 )
 
 arxiv_tool = Tool.from_function(
     func=ArxivAPIWrapper().run,
-    name="ArXiv Search",
+    name="ArXiv_Search",
     description="Search ArXiv for scientific papers. Input should be a research topic or query."
 )