The 2015 Paris Climate Agreement urges all countries to be transparent about their national circumstances and voluntary climate actions. Transparency is assumed to further accountability between countries and stimulate climate action. However, there is little empirical research conducted to underpin such assumptions. As transparency takes center stage in global climate governance, it is crucial to assess its transformative potential. This project is focused on specific components of international, national and transnational climate transparency arrangements. It interrogates in what ways participation in these arrangements affect state-to-state accountability, climate action and pathways of climate governance.