  We calculate the amplitude for exclusive electroweak production of a
pseudoscalar $D_s$ or a vector $D^*_s$ charmed strange meson on an unpolarized
nucleon, through a charged current, in leading order in $\alpha_s$. We work in
the framework of the collinear QCD approach where generalized gluon
distributions factorize from perturbatively calculable coefficient functions.
We include both $O(m_c)$ terms in the coefficient functions and $O(M_D)$ mass
term contributions in the heavy meson distribution amplitudes. We show that
this process may be accessed at future electron-ion colliders.
