The main aim of this project is to provide a wrapper of Matlab MEX-Files headers on the current API Scilab. By using the MEX-Files wrapper the toolboxes in Matlab will be very easy to port to Scilab and also existing libraries using Matlab MEX could be directly used in Scilab. A module - mexlib module already exists in Scilab which is compatible with the Matlab-Mex API. Extending the current module and writing tests for each extension will be the major part of the project. Adding tests and a working demo for the already existing MEX functions will be included.