  We study the surface states of a strongly coupled Weyl semimetal within
holography. By explicit numerical computation of an inhomogeneous holographic
Weyl semimetal we observe the appearance of an electric current restricted to
the surface in presence of electric chemical potential. The total current is
universal in the sense that it only depends on the topology of the phases
showing that the bulk-boundary correspondence holds even at strong coupling.
The implications of this result are subtle and may shed some light on anomalous
transport at weak coupling.

High Energy Physics - Theory;Strongly Correlated Electrons