  Very recently it was predicted the existence of a charged state near the
$D_s\bar{D}^*/D^*_s\bar{D}$ threshold. This state, that we call $Z_{cs}^+$,
would be the strange partner of the recently observed $Z_c^\pm(3900)$. Using
standard techniques of QCD sum rules, we evaluate the three-point function for
the vertices $Z_{cs}^+ \, J/\psi \, K^+$, $Z_{cs}^+ \, \eta_c \, K^{*+}$ and
$Z_{cs}^+ \, D_s^+\bar{D}^{*0}$ and we make predictions for the corresponding
decay widths in these channels.
