 In 1459, Filippo succeeded Domenico Capranica as Grand penitentiary, and he is credited with improving the procedures of the Apostolic Penitentiary, regularizing the registration of petitions.Filippo was camerlengo of the College of Cardinals in 1454–1455.Calandrini is credited with Pope Paul II's 1471 decree transferring the ancient see of Luni, a decayed Etruscan city, to his home city of Sarzana.