Tag Archive

Agent Payments

How autonomous AI agents pay for services — the infrastructure of machine-to-machine payments, protocol standards like MPP and L402, and what this means for API monetization.

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Visa Card-Based MPP Spec: Threat Model for Agent Payments

Visa's card-based MPP spec routes encrypted network tokens through HTTP 402 flows for AI agents. Technical breakdown of threat model, TAP identity, and SDK scope.

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Eight-step card charge flow diagram showing Client, Client Enabler, Server, and Server Enabler nodes with JWE encryption highlighted — illustrating the Visa card-based MPP credential exchange.

Web3 Builder9 min read

Visa Card-Based MPP Spec: Threat Model for Agent Payments

Visa's card-based MPP spec routes encrypted network tokens through HTTP 402 flows for AI agents. Technical breakdown of threat model, TAP identity, and SDK scope.

Marcus Bishop

Mar 28, 2026