In an era where climate change poses profound challenges to global stability, ISIpedia: the open climate-impacts encyclopedia, was conceived to empower a cadre of decision-makers, policy specialists, journalists, politicians, and researchers with essential, actionable insights. This innovative tool was developed as part of a collaborative initiative by ISIMIP, a joint project by Potsdam Institute for Climate Impact Research and International Institute for Applied Systems Analysis. It was aimed at synthesizing a vast array of fragmented and diverse climate impact data into a comprehensive, accessible format. Our fundamental goal was to provide high-quality, comparable data across multiple climate impact indicators—ranging from health to extreme weather events—tailored to inform policies and strategies in real-time.