  We highlight how the existence of an ultraviolet completion for interacting
Standard-Model type matter puts constraints on the viable microscopic dynamics
of asymptotically safe quantum gravity within truncated Renormalization Group
flows. A first constraint -- the weak-gravity bound -- is rooted in the
destruction of quantum scale-invariance in the matter system by strong
quantum-gravity fluctuations. A second constraint arises by linking
Planck-scale dynamics to the dynamics at the electroweak scale. Specifically,
we delineate how to extract a prediction of the top quark mass from
asymptotically safe gravity and stress that a finite top mass could be
difficult to accommodate in a significant part of the gravitational coupling
space.
