This working paper examines the dynamics of checkpoint authority in Somalia, focusing on how kinship, mobility and checkpoint practices intersect to shape political and social orders. The paper argues that checkpoints in Somalia—or isbaaro as they are locally called—are deeply embedded in the social fabric of clan society, where the practice of abanship—the brokerage of passage through clan territory—plays a crucial role. This brokerage not only facilitates trade but also reinforces clan identity and social differentiation