Pull financing is a powerful but underused mechanism for incentivising progress on hard-to-tackle social problems for which innovation or the take-up of innovation may be part of the solution. It should become part of the ongoing landscape for climate and development work. This paper sets out the specific design features for a portfolio of pull financing mechanisms to support the accelerated development of socially valuable innovations with both climate and development implications. It considers the institutional structure required to manage such a novel mechanism, a process for finding and developing a potential application, and the objectives pull financing should pursue. It then looks in detail at seven applications of pull financing in the climate and development space, each selected to illustrate the potential and challenges of the approach. We conclude by setting out how to construct a high-ambition portfolio of pull financing projects that is both tractable and attractive to potential funders.