In this paper, we describe an infrastructure for cooperative work support in Multi-Agent Systems (MAS). The infrastructure is based on a concept of Agora which can be considered as a facilitator of cooperative work. Basic features of the Agora based system as well as some implementation details (including communication adapter, message wrapper, proxy and default agent) are presented. An example of Virtual Shopping Mall as a general framework for modeling agent-based intelligent software services in mobile communications is used for illustration of the approach.