refac: allow class in tools

backend/utils/tools.py

@@ -20,7 +20,9 @@ def get_tools_specs(tools) -> List[dict]:
     function_list = [
         {"name": func, "function": getattr(tools, func)}
         for func in dir(tools)
-        if callable(getattr(tools, func)) and not func.startswith("__")
+        if callable(getattr(tools, func))
+        and not func.startswith("__")
+        and not inspect.isclass(getattr(tools, func))
     ]
 
     specs = []