Update app.py

app.py

@@ -1,25 +1,33 @@
+import pathlib
 import gradio as gr
 from mcp import StdioServerParameters
 from smolagents import MCPClient, CodeAgent
 
+# Absolute path to the MCP server script that lives next to this file
+SERVER_PATH = pathlib.Path(__file__).with_name("mcp_server.py")
 
-def respond(message, history):
-    """Send the user's message to the MCP-powered agent and return its reply."""
-    params = StdioServerParameters(command="python", args=["mcp_server.py"])
+
+def respond(message: str, history: list):
+    """Send the user message to the MCP‑powered agent and return the reply."""
+    # Launch the MCP server as a subprocess via stdio
+    params = StdioServerParameters(command="python", args=[str(SERVER_PATH)])
     with MCPClient(params) as tools:
-        agent = CodeAgent(tools=tools, model="gpt-4")  # swap for your LLM
+        agent = CodeAgent(tools=tools, model="gpt-4")  # change to your LLM if needed
         answer = agent.run(message)
-    history.append((message, answer))
+
+    # Update chat history using the new Gradio 'messages' format
+    history.append({"role": "user", "content": message})
+    history.append({"role": "assistant", "content": answer})
     return history, history
 
 
-with gr.Blocks() as demo:
+with gr.Blocks(title="Enterprise SQL Agent") as demo:
     chat_state = gr.State([])
-    chatbot = gr.Chatbot(label="Enterprise SQL Agent")
 
+    chatbot = gr.Chatbot(label="Enterprise SQL Agent", type="messages")
     textbox = gr.Textbox(
-        show_label=False,
         placeholder="Ask: Who are my inactive Northeast customers?",
+        show_label=False,
     )
     textbox.submit(respond, [textbox, chat_state], [chatbot, chat_state])
 
@@ -30,8 +38,9 @@ with gr.Blocks() as demo:
         - List customers sorted by last order date.
         - Find clients from the West with recent orders.
 
-        Built with MCP, smolagents, and Gradio
+        _Built with MCP, smolagents, and Gradio_
         """
     )
 
-demo.launch()
+if __name__ == "__main__":
+    demo.launch()