RIOXX.

RIOXX is a metadata application profile developed by EDINA and Chygrove Ltd (with support from Jisc) to assist UK higher education institutions to comply with the Research Councils UK Policy on Open Access. RIOXX is designed to aid the supply of precise metadata describing those scholarly publications which are generated by UK Research Councils funding. The RIOXX metadata application profile, version 2.0, was released on 22 January 2015. This article outlines the application profile and its purpose, and offers a little more detail on some particular metadata properties. It goes on to describe some of the principles behind its development, together with some of the challenges encountered and the solutions (and compromises) made to address these. A particular innovation has been the adoption of some of the practices associated with modern software development, notably the continuous testing regime. The article concludes with a brief account of progress to date. [ABSTRACT FROM AUTHOR]