Climate change from greenhouse gas accumulation may be the largest environmental challenge we currently face. Agriculture and forestry can help mitigate this change by reducing emissions of greenhouse gases and by sequestering carbon in soils and biomass. This activity can also make significant contributions to sustainable development in some of the world’s poorest countries that are not currently benefiting sufficiently from the carbon market and are also the most vulnerable to the negative effects of climate change. Building public private partnerships has the potential to overcome some market participation barriers creating obstacles to full participation by smallholder land use sequestration carbon development projects. These include high transaction costs, a weak enabling environment and a lack of effective extension infrastructure. Public-private partnerships can identify research needs, find solutions and bring them into general use through outreach and marketing. Of great benefit would be the development of an end-to-end project toolbox that would allow potential market participants to design and implement projects by taking advantage of advanced technology, community organizing, as well as regulatory and market information. Such a toolbox could be widely disseminated on the web, providing access to information on carbon measurement and monitoring from plot-level, community based surveys, to advanced remote sensing techniques. Data-bases of satellite imagery providing key regulatory information as well as allometric equations for multiple plant species. This could help planners to prepare project documents for presentation to executive market bodies and potential investors. Such a toolbox could greatly increase the number of successful sequestration projects in the developing world, helping poor farmers to enhance food and income security, while providing an important contribution to global efforts to address climate change.