In this paper, we introduce the concept and architecture of agent grid. Agent grid is an intelligent platform that enables the independent operating entities (agents) to interact with one another to form dynamic services on the Grid. Under this view, we built an agent grid platform named AGrIP that includes four layers and several useful toolkits.With the platform support, we implemented the flood decision support system which combines the wireless sensor network for data acquisition and

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... e agent technology for legacy system integration. Additionally, we developed a toolkit for programmers to visually develop software agents which makes the development process easier.Besides, the MWAC model proposed is for sensor network to save power which can transit the information for long distance.This system is now applied as a module in the City Emergency Interact Project.