An ontology-supported ubiquitous interface agent and its interaction diagram with the backend information agent system, i.e., OntoIAS, in cloud computing environments were proposed. The agent employs the CURRL to transform user commands into internal canonical format to conveniently process those commands by OntoIAS, which can avoid numerous, jumbled, and incorrect information torrents that results in misunderstanding of the information intention of users. In this paper, we preliminarily proposed the agent with the Zigbee techniques and related interaction diagrams with OntoIAS in cloud computing environments. The system prototype and experimental outcomes can also reveal the feasibility of the system architecture.