Jerome began in the summer of 2010, as an informal 'un-project', with the aim of radically integrating data available to the University of Lincoln's library services and offering a uniquely personalised service to staff and students through the use of new APIs, open data and machine learning. Jerome addresses many of the challenges highlighted in the Resource Discovery Taskforce report1, including the need to develop scale at the data and user levels, the use of third-party data and services and a better understanding of 'user journeys'. Here, we propose to formalise Jerome as a project, consolidating the lessons we have learned over the last few months by developing a sustainable, institutional service for open bibliographic metadata, complemented with well documented APIs and an 'intelligent', personalised interface for library users.