  Contextuality has been identified as a potential resource responsible for the
quantum advantage in several tasks. It is then necessary to develop a
resource-theoretic framework for contextuality, both in its standard and
generalized forms. Here we provide a formal resource-theoretic approach for
generalized contextuality based on a physically motivated set of free
operations with an explicit parametrisation. Then, using an efficient linear
programming characterization for the contextual set of prepared-and-measured
statistics, we adapt known resource quantifiers for contextuality and
nonlocality to obtain natural monotones for generalized contextuality in
arbitrary prepare-and-measure experiments.
