This document outlines the principles and objectives of the weADAPT platform, which aims to promote adaptation as a process of socio-institutional learning by sharing information on climate adaptation issues. The platform seeks to (1) provide accessible information and tools to guide adaptation projects, (2) allow users to share experiences and lessons learned, and (3) create a community of practitioners and researchers to accelerate adaptation capacity building. Key questions explored include how to represent different knowledge types, build communities of practice, encourage knowledge use, and support continuous learning.