The complex nature of heterogeneous catalysis on copper (Cu) electrodes for CO2RR necessitates a careful kinetic approach. This is essential to ensure that computational models developed for gas diffusion electrodes (GDEs) accurately reflect experimental conditions and catalytic activities. We take a step forward towards direct coupling of microkinetic information over Cu electrodes with a mass transport model, to ensure almost all discovered pathways on a typical catalytic facet can be fully integrated rather than a few selected dominant pathways normally used to develop the kinetic signature of the catalyst.