How is a composite agent certified?
As one unit of reliance, with one score. A composite is built from several sub agents, tools or models, and the unit of assessment is the thing a counterparty relies on, whatever it is built from.
That brings three further evidence requirements. Distribution Control is scored against the widest authority any component holds, never the average, because a mistake or an attacker reaches the whole through the weakest boundary. The Autonomy Envelope is scored against the longest unsupervised chain the composite can run end to end, including any step where one sub agent invokes another. AI Integration is scored on whether handoffs between components keep the identity, authority and audit trail of the original request.
A composite whose components are each well governed but whose handoffs are not will score below the sum of its parts. That is intended.