We introduce Resource Aware Attention (RAA), a new attention mechanism designed from the ground up against the resource envelope of the deployment target — CPU cache hierarchy, precision tier, and latency SLO — with the envelope as a first-class input to the mechanism rather than a downstream compression concern. We also introduce the RAA family, the first line of models built under this design principle, and BudSentinel, the safety-guardrail product line built on the family’s safety-specialized variant.