The creation of the Local Communities and Indigenous Peoples Platform under the United Nations Framework Convention on Climate Change (UNFCCC) set out to incorporate Indigenous and local knowledge into the science–policy landscape of the climate field. The Platform is a crucial case of institutional change, as it signals an incipient shift from a science-centric toward a pluralistic approach to knowledge in global climate governance. This article traces this process of change in the politics and practices underlying the establishment and design of the Platform as an interface for Indigenous and local knowledge holders. The analysis shows that the sui generis design of the Platform was the product of bricolage (recombination) and translation (recontextualization) of disparate elements with the purpose of accommodating various political demands in an altogether new kind of knowledge–policy interface: a diverse boundary organization. The article makes an empirical contribution to the historical development of knowledge politics in the UNFCCC and a theoretical contribution to the study of boundary organizations by advancing a broader conceptualization that transcends science-centric approaches.