fix: ensure all tools are proper Tool instances with required attributes

app.py

@@ -191,17 +191,24 @@ class GetCurrentTimeInTimezoneTool(Tool):
             return f"Error fetching time for timezone '{timezone}': {str(e)}"
 
 # Create the agent with the templates
-tools = {
-    "final_answer": final_answer,
-    "search": DuckDuckGoSearchTool(),
-    "calculate_min_price": CalculateMinPriceTool(),
-    "extract_price_from_snippet": ExtractPriceFromSnippetTool(),
-    "get_current_time_in_timezone": GetCurrentTimeInTimezoneTool()
-}
+tools = [
+    final_answer,  # This is already a Tool instance
+    DuckDuckGoSearchTool(),  # This is already a Tool instance
+    CalculateMinPriceTool(),  # This is a Tool subclass
+    ExtractPriceFromSnippetTool(),  # This is a Tool subclass
+    GetCurrentTimeInTimezoneTool()  # This is a Tool subclass
+]
+
+# Verify all tools are proper Tool instances and have required attributes
+for tool in tools:
+    if not isinstance(tool, Tool):
+        raise TypeError(f"Tool {tool} is not an instance of Tool or its subclass")
+    if not hasattr(tool, 'name') or not hasattr(tool, 'description'):
+        raise AttributeError(f"Tool {tool} is missing required attributes (name or description)")
 
 agent = CodeAgent(
     model=model,
-    tools=tools,  # Pass tools as a dictionary
+    tools=tools,  # Pass tools as a list of Tool instances
     max_steps=15,
     verbosity_level=2,
     grammar=None,