Update app.py

app.py

@@ -92,10 +92,30 @@ Analyze the following clinical notes and provide a detailed, concise summary foc
 Respond in well-structured bullet points with medical reasoning.
 """
 
+def validate_tool_file(file_path):
+    try:
+        with open(file_path, 'r') as f:
+            data = json.load(f)
+        if isinstance(data, list):
+            assert all(isinstance(t, dict) and "name" in t for t in data), "Invalid tool list format"
+        elif isinstance(data, dict):
+            assert "tools" in data and isinstance(data["tools"], list), "'tools' field missing or invalid"
+            assert all(isinstance(t, dict) and "name" in t for t in data["tools"]), "Invalid tools inside 'tools' field"
+        else:
+            raise ValueError("Tool file is neither a list nor a dict with 'tools'")
+        return True
+    except Exception as e:
+        print(f"❌ Error validating tool file {file_path}: {e}")
+        return False
+
 def init_agent():
     tool_path = os.path.join(tool_cache_dir, "new_tool.json")
     if not os.path.exists(tool_path):
         shutil.copy(os.path.abspath("data/new_tool.json"), tool_path)
+
+    if not validate_tool_file(tool_path):
+        raise ValueError("Tool file format invalid, cannot initialize agent.")
+
     agent = TxAgent(
         model_name="mims-harvard/TxAgent-T1-Llama-3.1-8B",
         rag_model_name="mims-harvard/ToolRAG-T1-GTE-Qwen2-1.5B",