The description process should follow ISO/IEC/IEEE 42010 and works through analysing the problem, identifying stakeholders and their needs, formalising and classifying requirements, identifying candidate solutions and the viewpoints that answer stakeholder concerns, then developing models and views. It must record the rationale for each candidate, keep that rationale traceable to motivation data, review the candidates with stakeholders for approval, and relate them to design and other downstream activities.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.