Strength of correlations in a silver-based cuprate analog

${\mathrm{AgF}}_{2}$ has been proposed as a cuprate analog, which requires strong correlation and marked covalence. On the other hand, fluorides are usually quite ionic, $4d$ transition metals tend to be less correlated than their $3d$ counterparts, calls for further scrutiny. We combine valence band photoemission Auger-Meitner spectroscopy of AgF together with computations in small clusters estimate values Ag Coulomb interaction ${U}_{4d}$ charge-transfer energy ${\mathrm{\ensuremath{\Delta}}}_{pd}$. Based on these values, can classified insulator according Zaanen-Sawatzky-Allen classification scheme. Thus, we confirm that material is analog from point view correlations, suggesting it should become high-temperature superconductor if metallization achieved by doping. present also computation Hubbard $U$ density functional ``$+U$'' methods discuss its relation spectroscopies.