A Demonstration of the Agent Reputation and Trust (ART) Testbed for Experimentation and Competition Karen K. Fullam 1 , Tomas B. Klos 2 , Guillaume Muller 3 , Jordi Sabater 4 , Zvi Topol 5 , K. Suzanne Barber 1 , Jeffrey S. Rosenschein 5 , and Laurent Vercouter 3 1 Laboratory for Intelligent Processes and Systems, University of Texas at Austin, USA 2 Center for Mathematics and Computer Science (CWI), Amsterdam, The Netherlands 3 Ecole Nationale Superieure des Mines, Saint-Etienne, France 4 Institute of Cognitive Science and Technology (ISTC), National Research Council (CNR), Rome, Italy 5 Multiagent Systems Research Group—Critical MAS, Hebrew University, Jerusalem, Israel May 13, 2005