Are there any Endothermic Pyrophoric Substances?

I've recently been reading about pyrophoric materials, specifically as they relate to rocketry, and this made me curious if there are any substances which are the complete opposite of pyrophoric. Essentially, are there any materials which react on contact with air (i.e. either gaseous nitrogen or oxygen), but *endothermically*? If so, do they react at STP, or only under special circumstances?


