Linear scaling relationships have been successfully implemented into RMG to generate unique microkinetic models for any metal surface, scaling from estimates of adsorption on Pt(111), which are based on DFT calculations. RMG models for the catalytic partial oxidation of CH 4 were generated for metal catalysts with carbon adsorption energies ranging from -2.0 eV to -7.5 eV and oxygen adsorption energies from -1.5 eV to -6.5 eV, valid for C/O inlet gas ratios between 0.6 and 2. The sensitivity maps demonstrate the need for microkinetic models formed without a priori assumptions, because the rate limiting step is affected by catalyst properties. Building such models by hand is inefficient, so an open-source tool to do this automatically, for any reaction of interest, is indispensable. RMG can be used to screen novel metal catalysts at a fraction of the cost of experiments and can help elucidate and control complex chemical phenomena that had previously been a mystery.