diff --git a/__pycache__/main.cpython-314.pyc b/__pycache__/main.cpython-314.pyc
deleted file mode 100644
index 2e26d7f..0000000
Binary files a/__pycache__/main.cpython-314.pyc and /dev/null differ
diff --git a/config_manager.py b/config_manager.py
index 53b6b8d..7b34cc1 100644
--- a/config_manager.py
+++ b/config_manager.py
@@ -115,14 +115,14 @@ class ConfigManager:
         # Create a deep copy to avoid modifying original
         result = copy.deepcopy(config)
         
-         # Decrypt configurations
-         if "configurations" in result and isinstance(result["configurations"], dict):
-             for name, config_data in result["configurations"].items():
-                 if isinstance(config_data, dict):
-                     # Decrypt API keys for relevant providers
-                     provider = config_data.get("provider", "").lower()
-                     if provider in ["openai", "openrouter", "mcp"] and "api_key" in config_data:
-                         config_data["api_key"] = self._decrypt_data(config_data["api_key"])
+        # Decrypt configurations
+        if "configurations" in result and isinstance(result["configurations"], dict):
+            for name, config_data in result["configurations"].items():
+                if isinstance(config_data, dict):
+                    # Decrypt API keys for relevant providers
+                    provider = config_data.get("provider", "").lower()
+                    if provider in ["openai", "openrouter", "mcp"] and "api_key" in config_data:
+                        config_data["api_key"] = self._decrypt_data(config_data["api_key"])
         
         return result
     
diff --git a/main.py b/main.py
index 8cbcd4f..bec2dd2 100644
--- a/main.py
+++ b/main.py
@@ -10,7 +10,7 @@ from typing import Optional, List, Dict, Any
 from deepagents import create_deep_agent
 from langchain.chat_models import init_chat_model
 from langchain_core.messages import HumanMessage, SystemMessage
-from langchain.tools import Tool
+from langchain_core.tools import Tool
 
 # Import custom tools
 try:
diff --git a/mcp_client.py b/mcp_client.py
index 9815f12..83a0fd8 100644
--- a/mcp_client.py
+++ b/mcp_client.py
@@ -5,7 +5,7 @@ Enables integration with MCP servers like skills.sh to discover and use tools
 import json
 import requests
 from typing import Dict, List, Any, Optional
-from langchain.tools import Tool
+from langchain_core.tools import Tool
 import logging
 
 logger = logging.getLogger(__name__)
@@ -97,6 +97,7 @@ class MCPClient:
             return self._available_tools
         except Exception as e:
             logger.error(f"Failed to list tools from MCP server {self.server_url}: {e}")
+            self._available_tools = []
             return []
     
     def call_tool(self, tool_name: str, arguments: Dict[str, Any]) -> Any: