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According to SOA model (service oriented architecture), services can be used or can use other services. Participation is not supported. A service cannot collaborate with other partners being aware of this collaboration. As Grid services are developed according to the SOA model, we investigate how the integration of mobile agent technology in Grid architectures can help to overcome this limitation. Aims of this contribution are: design and development of agent based Globus services. Mobile agents programmers can execute their application on Grid infrastructures. Grid users, on their own, can invoke mobile agents services using standard Web Services technology. Here we define a model of agent-enabled Grid node and describe the architecture we have designed and realized. In particular we implemented some services to manage and monitor mobile agents platforms executing on a Grid node. We support inter-Grid Nodes agent mobility that exploits globus authentication mechanisms. The more general result is the definition of a service model and a framework for developing and deploying Mobile Agents based Grid services. Our framework supports programmers by automatic generation of code that implements, for each new designed service, a proxy between WSRF technology and Mobile Agents one.