Agency foundations research in artificial intelligence focuses on characterizing the nature of agency for both humans and artificial agents and in the context of AI-human interactions. It seeks to answer questions related to agency as a capacity to act and be an effective actor in the world. For example, how human control over the world is exerted including from biological, psychological and socioeconomic forces. And how AI systems exert and acquire control over their environments. In the context of AI-human interactions, agency foundations research seeks to answer questions about how AI-systems may deplete or increase human control over the world.