As regional trade agreements in the Asia and Pacific have expanded into domestic regulatory space, their potential impacts on health have intensified. Recent scholarship has produced robust evidence of the pathways by which trade can impact positively and negatively on health. What remains underexplored is the governance of trade policymaking which enables or constrains meaningful participation of health experts and civil society. This pilot project responds to this governance gap by proposing to develop and test a tool for evaluating trade negotiating processes according to governance principles of transparency and participation.