X2C , X coupling matrix

I am exploring X2C calculations with psi4 using psi4numpy. I would like to get the coupling matrix (X), and I am not sure if psi4.core.Wavefunction.X() is what I need . Alternatively, it would be possible to get the modified overlap matrix (S) and the dipole moment in the x2c framework from mints?
Thank you very much for any help/suggestions!