Asset recovery is a fundamental principle of anti-corruption law, without which the financial damage from corruption cannot be repaired. Yet recovering assets is notoriously difficult and time-consuming, and the United Nations Convention Against Corruption provides little technical or institutional support to facilitate such returns. To remedy this, we propose the creation of a transnational asset recovery mechanism that could provide myriad services to states upon request, including gathering and publishing information, providing technical assistance and capacity building, helping to conclude agreements on asset return, and monitoring returned funds. Theoretically, we introduce the concepts of customizability and selectability to explain why a flexible transnational asset recovery mechanism has advantages over more formal international institutions, such as an international anti-corruption court. These benefits include lower financial and political costs, enhanced adaptability, and a greater likelihood of enhancing interstate cooperation regarding asset returns.