  We investigate the real-space profile of effective Coulomb interactions in
correlated kagome materials. By particularizing to KV$_3$Sb$_5$,
Co$_3$Sn$_2$S$_2$, FeSn, and Ni$_3$In, we analyze representative cases that
exhibit a large span of correlation-mediated phenomena, and contrast them to
prototypical prevoskite transition metal oxides. From our constrained random
phase approximation studies we find that the on-site interaction strength in
kagome metals not only depends on the screening processes at high energy, but
also on the low-energy hybriziation profile of the electronic density of
states. Our results indicate that rescaled by the onsite interaction amplitude,
all kagome metals exhibit a universal long-range Coulomb behaviour.
