The Slovak Parliament passed a new organising act on the Constitutional Court in 2019, which for the first time recognised the admissibility of unsolicited amicus briefs. Amici Curiae, or “friends of the court,” are individuals, groups, or entities, who present the court with new legal arguments, social scientific information, or alternative perspectives on the litigated question. The device allows interested non-parties to influence the case outcome, which may have a larger systemic impact. This post examines the design of the device and its functional alternatives in Slovak constitutional law.