Update calculator_server.py

calculator_server.py

@@ -40,8 +40,8 @@ if __name__ == "__main__":
     logger.info(f"Starting FastMCP server on host 0.0.0.0 port {port}")
     
     try:
-        # Use regular HTTP transport instead of streamable-http for simple JSON requests
-        mcp.run(transport="http", host="0.0.0.0", port=port)
+        # FastMCP only supports streamable-http transport
+        mcp.run(transport="streamable-http", host="0.0.0.0", port=port)
     except Exception as e:
         logger.error(f"Failed to start server: {e}")
         raise