The Contract Automata Tool is an open-source tool for the specification, composition and synthesis of coordination of service contracts, including functionalities to deal with modalities and configurations. We discuss an implementation of the abstract parametric synthesis algorithm firstly introduced in our COORDINATION 2019 paper, comprehending most permissive controller, orchestration and choreography synthesis. The tool’s source code has been redesigned and refactored in Java 8, and we show the resulting gain in computational efficiency.