A set of protocol-level enhancements for A2A, including a USER_CONSENT_REQUIRED state and a DirectDataFlowController, is proposed to keep payment and identity data away from intermediary agents.
Introducing the model context protocol,
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Improving Google A2A Protocol: Protecting Sensitive Data and Mitigating Unintended Harms in Multi-Agent Systems
A set of protocol-level enhancements for A2A, including a USER_CONSENT_REQUIRED state and a DirectDataFlowController, is proposed to keep payment and identity data away from intermediary agents.