Claims are optional, but a claim that is made states the date, the guideline title, version and URI (WCAG 2.2 at https://www.w3.org/TR/WCAG22/), the level satisfied, a concise description of the pages covered (including whether subdomains are included), and the web content technologies relied upon; a conformance logo constitutes a claim and needs the same components.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.