The document welcomes principal investigators to an overview of the XC project. XC aims to provide an alternative way to reveal library collections through an open source, collaborative platform that can handle multiple metadata schemas and was informed by user research. The vision is to address the needs of many libraries through a flexible and extensible platform. Phase 1 of XC, funded by the Mellon Foundation, involves developing a detailed project plan to build the XC system in phase 2 and establishing a community of partners through outreach and a needs survey.