Pink's vendor-neutral crosswalk of 14 payment providers/protocols (AP2, Stripe Issuing, Privacy.com, Lithic, AgentCard, Crossmint, Coinbase CDP, Circle, Tempo, Payman, Skyfire, x402, Visa Intelligent Commerce, Mastercard Agent Pay): how each caps AI agent spending, exact field names, units, and enforcement points, sourced to a verbatim quote.
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Updated
Oct 7, 2026