The stream control transmission protocol (SCTP) is a new transport protocol, which provides multi-streaming and multi-homing features. Especially, recent SCTP extensions with dynamic address reconfiguration supports transport layer mobility. We address web agent framework supporting seamless transport layer mobility in the wired and wireless environment. Our proposed framework for mobile web agent deploys SCTP with dynamic address reconfiguration. Mean response time is an important performance measure of web agents. Our simulation results show that our SCTP based framework reduces the mean response time of a typical transmission control protocol (TCP) based framework remarkably.