Within the framework of the Harmoni-CA project for the European Commission, the development of a science–policy interfacing instrument is initiated in order to meet the above-mentioned science–policy gap problems [Quevauviller, Ph., Balabanis, P., Fragakis, C., Weydert, M., Oliver, M., Kaschl, A., Arnold, G., Kroll, A., Galbiati, L., Zaldivar, J.M., Bidoglio, G., 2005. Science–policy integration needs in support of the implementation of the EU water framework directive. Env. Sci. Policy 8 (3), 203–211; Arnold G.E., de Lange, W.J., Blind, M.W., 2005. The Conserted Action Harmoni-CA facilitating the dialogue and bridging the gap between research and WFD implementation. Env. Sci. Policy 8 (3), 213–218]. This paper describes a concept developed by the authors, on how the science–policy interfacing technically can be supported through the bi-directional linking of various types of information sources identified as potential means for enhancing the interfacing mechanism. The information sources identified are policy implementation tasks (at the policy side), and ICT tools, methodologies and guidances (as results of RTD projects). Experiences on the application of RTD results in policy implementation tasks are one of the glue elements between these information sources in combination with activity-related and contextual keywords.