This paper seeks to examine and elucidate the role of the Public Prosecutor in shaping public policies in Brazil. The primary objective is to critically assess, in the context of the Social State of Law as delineated in the 1988 Federal Constitution, the expansion of the State's obligations concerning the protection and enforcement of fundamental and civil rights. Additionally, the paper will explore the responsibilities of the judiciary in this domain. The arguments will be presented using a deductive methodology, supported by a comprehensive literature review, which considers the persistence of unmet rights. The analysis will underscore the significance of the Public Prosecutor's responsibilities in formal extrajudicial arrangements, cooperative, and democratic processes with respect to the effective implementation of fundamental rights.