in the searching of continuous innovation, one of the major private banks in argentina decides to open some of the private APIs and expose operations to promotes cooperation with partners & fintechs.We design and develop the first Public API Portal including the top used operations in orden to provide support to a public hackathon.During the project, and working ion close collaboration with the Architecture team of Banco Galicia, we define 10 APIs and design the REST/JSOPN contract, just to continue with the implementation of a java based solution and docker platform for the runtime environment.