Mastercard's Agent Connect: who handles the state when a catalog changes mid-purchase?
KamilKad · reddit · 2026-09-14
Mastercard announced Agent Connect (Sept 9, US rollout) letting AI agents discover catalogs, confirm final pricing, and complete buyer-authorized transactions. The author highlights the unsolved state problem — price/stock/shipping can change between recommendation and authorization — and proposes treating pre-payment responses as expiring quotes: bind to SKU + catalog version, add expiry, revalidate inventory, and re-request approval on material changes.
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