A method, system, and tool product for creating a grammar for a natural language dialog system from a device description is provided. The system can include a device descriptor for identifying configuration, interface, object, and attribute information of the device, a speech grammar for identifying one or more rules generated from the device descriptor that are supported by the device, a speech recognition system for invoking rules of the speech grammar, and a processor for facilitating interoperability and development of distributed applications and providing delineated coverage of the one or more rules in view of the device descriptor.