The “temporary golden age” of international courts is likely over. States seeking to provide oversight mechanisms and individual remedies at the international level are likely to opt for less intrusive and more flexible alternatives to adjudication. This Article analyzes the phenomenon of international complaint mechanisms through a detailed case study of the Ombudsperson to the ISIL and Al-Qaida sanctions regime. The analysis reveals an in-built tension between principle and pragmatism: the Ombudsperson's institutional design falls short of the requirements that are essential for adjudication, but it nevertheless proves to be a surprisingly effective remedy for persons wrongfully listed. The Article makes the case for the establishment of such bodies, despite some of their inherent shortcomings.