How can the creation, management, and use of metadata developed as part of post-custodial archival projects and partnerships between United States based institutions and Latin American organizations improve current archival description praxis? By recognizing that many historically colonized and oppressed communities in Latin America seek to redefine and address longstanding racism, homophobia, cultural hegemony, and classism both locally and abroad, this article argues that this work cannot rest solely on the shoulders of those most impacted by colonialism and White supremacy. Through a critical archival studies lens, the author situates traditional metadata practices while also juxtaposing them against those used in a post-custodial paradigm. In addition, anti-colonial and anti-racist frameworks interrogate the cultural, power, and racial dynamics within the partnerships. Concrete examples from the author's work in Colombia and Brazil provide the backdrop for a critical reflection on the unique methodologies used throughout various post-custodial projects. In order to truly unsettle institutional archives, archivists and others in positions of power must relinquish authority and complete control through the work of description in an effort to make space for those most oftentimes excluded or ignored.