This article examines the contribution of the economy of conventions to economic analysis. It is part of current research on economic agents' modes of coordination, based on a critique of standard neoclassical theory. Throughout this research, the main aim of conventions economy is to establish an individual and collective dialectic within coordination mechanisms. In so doing, it makes theoretical propositions on the nature of individuals and communities, as well as on the procedure of going from one to the other. The argument defended in this article is that such a research programme is incompatible with the postulate of methodological individualism from which the conventionalists claim to draw their inspiration. But it is not compatible w...