Rioxx is a modern metadata application profile designed to help universities comply with open access mandates from RCUK and HEFCE by making research outputs publicly accessible. Developed with a focus on pragmatism and user needs, it incorporates properties from multiple namespaces to represent various aspects of research outputs, including funders, licenses, and identifiers. Since its release in January 2015, Rioxx has been implemented in 56 repositories and is gaining traction within international aggregation initiatives.