Agents and Peer to Peer Computing : First International Workshop AP2PC 2002 Bologna Italy July 15 2002 Revised and Invited Papers Peer to peer (P2P) computing is currently attracting enormous public attention spurred by the popularity of file sharing systems such as Napster Gnutella and Morpheus. In P2P systems a very large number of autonomous computing nodes the peers rely on each other for services. P2P networks are emerging as a new distributed computing paradigm because of their potential to harness the computing power of the hosts composing the network and because they make their underutilized resources available to each other. This book brings together three especially commissioned invited articles an introduction and revised versions of the papers presented at the 1st International Workshop on Agents and Peer to Peer Computing AP2PC 2002 held in Bologna Italy in July 2002. The book is organized into topical sections on peer to peer services discovery and delivery of trustworthy services and search and cooperation in peer to peer agent systems