Currently, we can find a large number of user interfaces made by developers who do not follow of current UX premises, i.e. they are not adapted. Normally this is due to financing problems and resources of software projects. In order to study, develop and reuse adaptive user interfaces in a fast and non-invasive way, a new method of interface description is proposed, which would provide to an external library with enough information to restructure the interface in accordance with the use and habits of the user. This way of defining the interfaces is directly linked to the use of Adaptive Interface Ecosystems (AIE), components that work at sight level and whose mechanics can be applied to interfaces independently of their physical nature. Following this methodology of description of the interface, the AIE will be able to carry out an adaptive design of the interface, with very low production and development costs.