1 Introduction 1.1 What is the idea of 4ti2Interface 4ti2Interface is an GAP-Package that provides a link to the CAS 4ti2. It is not supposed to do any work by itself, but to provide the methods in 4ti2 to GAP. At the moment, it only capsules the groebner and hilbert method in 4ti2 but there are more to come. If you have any questions or suggestions, please feel free to contact me, or leave an issue on https://github.com/homalg-project/4ti2Interface.git.