The aim of this article is to inquire whether contract law can operate in a state of affairs in which artificial general intelligence (AGI) exists and has the cognitive abilities to interact with humans to exchange promises or otherwise engage in the sorts of exchanges typically governed by contract law. AGI is a long way off, but its emergence may be sudden and come in the lifetimes of some people who are alive today. How might contract law adapt to a situation in which at least one of the contract parties could, from the standpoint of a capacity to engage in promising and exchange, be an AGI? [---]