Abstract
International legal cooperation has gained importance with the innovation brought by the Code of Civil Procedure of 2015. In the field of international law, cooperation has existed for years, making judicial and administrative acts from one country to another, based on treaties or even on reciprocity. The central idea of international legal cooperation with its main instruments of cooperation - letters rogatory, direct aid, extradition, homologation of foreign sentence - is to harmonize the interests of sovereign states respecting the autonomy of each one. Thus, international law is strengthened and countries contribute to international harmony. In Brazil, there are mechanisms that implement international legal cooperation in addition to the ratification of international agreements for its viability. The objective is to present the modalities of international legal cooperation present in the Brazilian legislation and to demonstrate the concreteness through jurisprudence. This institute in question results for Brazil in expanding its international judicial and administrative contexts.