A footprint communication is the fourth named type. The type is a statement that communicates footprint information for a product, and it is treated as a type in its own right rather than as an EPD. The 2026 footprint standard carries the detailed requirements, and the life cycle terms in clause 3.4 are the vocabulary it uses.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.