# V0.1.0 of mqc released! > Source: > Published: 2026-09-10 05:18:39+00:00 Yes! it is here sorry haha I made a mistake there I wanted both links. The idea is that you obtain them through the many body expansion, where you do fragment-monomers, and then you couple them to form dimers, trimers, tetramers. You truncate at a point where you’re confident you won’t affect the energy too much. Usually this is at trimers/tetramers. This captures most of the many-body effects. There are methods (also coded up into mqc) that do it via electrostatic embedding (FMO, EE-MBE)