Legati is a collaborative dataset recording every diplomatic mission (in a broad sense) exchanged between Spanish and Muslim authorities during the Early Modern Age (1492-1708). Actors, places, involved authorities and results are identified. As these contacts are peculiar to the requirements of classical diplomacy, special attention is paid to the criteria for the choice of actors, the accreditations they carried, the ceremonial or confessional problems they faced, and the issues of material and immaterial culture that emerged. Finally, the bibliography and sources are listed in detail to serve as a basis for future research.