A SOC 3 contains no system description (so detailed controls are not disclosed) and no description of the auditor's tests and results; adding such detail raises the chance of misunderstanding and could lead the auditor to restrict use, so a report containing it is unlikely to suit general use (Guide 1.75 and note 24, AT-C 205 .A85).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.