The article presents a proposal of methodology for the management of relationship capital in clusters, aiming at a more fluid communication process among its agents. It is based on the assumption that we live in a new reality, marked by the relevance of information, knowledge and network organizations. In this context, intangible assets play a major role in the competitiveness of the organizations and need to be taken into account in its management. The main purpose of the methodology presented, based in the concepts of "knowledge capitals" and "value networks", is to make information and knowledge flows easier among the various agents of a cluster, by managing of the relationship between them in a more efficient way.