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The automated generation of arbitrary exclusive final states produced viaphoton fusion in ultraperipheral high-energy collisions of protons and/ornuclei is implemented in the MadGraph5_aMC@NLO and HelacOnia Monte Carlo codes.Cross sections are calculated in the equivalent photon approximation using$\gamma$ fluxes derived from electric dipole and charge form factors, andincorporating hadronic survival probabilities. Multiple examples of$\gamma\gamma$ cross sections computed with this setup, named gamma-UPC, arepresented for proton-proton, proton-nucleus, and nucleus-nucleusultraperipheral collisions (UPCs) at the Large Hadron Collider and FutureCircular Collider. Total photon-fusion cross sections for the exclusiveproduction of spin-0,2 resonances (quarkonia, ditauonium, and Higgs boson; aswell as axions and gravitons), and for pairs of particles ($J/\psi J/\psi$, WW,ZZ, Z$\gamma$, $t\bar{t}$, HH) are presented. Differential cross sections forexclusive dileptons and light-by-light scattering are compared to LHC data.This development paves the way for the upcoming automatic event generation ofany UPC final state with electroweak corrections at next-to-leading-orderaccuracy and beyond.

gamma-UPC: Automated generation of exclusive photon-photon processes in ultraperipheral proton and nuclear collisions with varying form factors