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AP2: The Agent Payments Protocol

When an agent buys something, the card network sees a transaction with no human present, and the only question anyone cares about afterwards is who authorized it. AP2 answers that with three signed mandates, one for what the user asked for, one for what the agent chose, and one for what gets charged, so a dispute resolves against evidence instead of a chat log.

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RELATED CONCEPTS

Agent-to-Agent Interoperability (A2A)Bounded Autonomy and Human-in-the-Loop RBAC, ABAC and Identity at Runtime for Agents Audit Trails and Traceability OAuth 2.0, JWTs and Service Credentials

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