Per Section 508 ICT Accessibility Revised + WCAG 2.0/2.1: functional performance. Requirements include (a) Functional Performance Without Vision + (b) Without Hearing + (c) Without Speech + (d) Without Color Perception + (e) Without Manipulation/Strength + (f) for users with photosensitivity + (g) understanding capabilities. Align with WCAG 2.x A + AA.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.