An agent-ready commerce platform does not only need to answer, refuse, or act.
It needs to prove why it answered, refused, or acted.
That proof cannot be reconstructed reliably from vague logs after something goes wrong. It has to be captured at the moment the platform makes the decision.
When an agent says a product can be compared, the platform should know which product facts supported the comparison.
When an agent refuses to quote a return policy, the platform should know which policy coverage was missing.
