The advances in both wireless data communications and portable computing technologies have recently generated a new trend: nomadic computing. The concept of nomadic computing has emerged as the expectation of nomadic end-users to retain one's personal computing environments and access capabilities wherever one happens to be. The changing environment in wireless due to mobility and interference gives rise to varying bandwidth, latency, error rate, loss probability, interoperability, and quality of display Conj-onted with these circumstances, the ability to support adaptability and QoS-awareness in a transparent and integrated fashion is essential. This paper describes an agent-based framework with QoS-aware content negotiation for gateway-based nomadic applications.