  We obtain predictions accurate at the next-to-leading order in QCD for the
production of a generic spin-two particle in the most relevant channels at the
LHC: production in association with coloured particles (inclusive, one jet, two
jets and $t\bar t$), with vector bosons ($Z,W^\pm,\gamma$) and with the Higgs
boson. We present total and differential cross sections as well as branching
ratios as a function of the mass and the collision energy also considering the
case of non-universal couplings to standard model particles. We find that the
next-to-leading order corrections give rise to sizeable $K$ factors for many
channels, in some cases exposing the unitarity-violating behaviour of
non-universal couplings scenarios, and in general greatly reduce the
theoretical uncertainties. Our predictions are publicly available in the
MadGraph5\_aMC@NLO framework and can, therefore, be directly used in
experimental simulations of spin-two particle production for arbitrary values
of the mass and couplings.
