  Engineering surfaces and interfaces of materials promises great potential in
the field of heterostructures and quantum matter designer, with the opportunity
of driving new many-body phases that are absent in the bulk compounds. Here, we
focus on the magnetic Weyl kagome system Co$_3$Sn$_2$S$_2$ and show how for
different sample's terminations the Weyl-points connect also differently, still
preserving the bulk-boundary correspondence. Scanning-tunnelling microscopy has
suggested such a scenario indirectly. Here, we demonstrate this directly for
the fermiology of Co$_3$Sn$_2$S$_2$, by linking it to the system real space
surfaces distribution. By a combination of micro-ARPES and first-principles
calculations, we measure the energy-momentum spectra and the Fermi surfaces of
Co$_3$Sn$_2$S$_2$ for different surface terminations and show the existence of
topological features directly depending on the top-layer electronic
environment. Our work helps to define a route to control bulk-derived
topological properties by means of surface electrostatic potentials, creating a
realistic and reliable methodology to use Weyl kagome metals in responsive
magnetic spintronics.
