diff --git a/lang_agent/tool_manager.py b/lang_agent/tool_manager.py
index 12ae52b..83c8d14 100644
--- a/lang_agent/tool_manager.py
+++ b/lang_agent/tool_manager.py
@@ -89,7 +89,6 @@ class ToolManager:
         """instantiate all object with tools"""
 
         self.tool_fncs = []
-        self.tool_dict = {}
         tool_configs = self._get_tool_config()
         for tool_conf in tool_configs:
             tool_name = tool_conf.get_name()[:-6]
@@ -97,9 +96,10 @@ class ToolManager:
                 logger.info(f"making tool:{tool_name}")
                 fnc_list = self._get_tool_fnc(tool_conf.setup())
                 self.tool_fncs.extend(fnc_list)
-                self.tool_dict[tool_name] = fnc_list
             else:
                 logger.info(f"skipping tool:{tool_name}")
+        
+        self._build_langchain_tools()
     
     
     def get_tool_fncs(self):
@@ -118,13 +118,12 @@ class ToolManager:
         else:
             return StructuredTool.from_function(func=func)
             
+    def _build_langchain_tools(self):
+        self.langchain_tools = []
+        for func in self.get_tool_fncs():
+            self.langchain_tools.append(self.fnc_to_structool(func))
+
+        return self.langchain_tools
     
     def get_list_langchain_tools(self):
-        out = []
-        for func in self.get_tool_fncs():
-            out.append(self.fnc_to_structool(func))
-
-        return out
-    
-    def get_dict_langchain_tools(self):
-        return jax.tree_util.tree_map(self.fnc_to_structool, self.tool_dict)
+        return self.langchain_tools
\ No newline at end of file