AP2 lab
A shopping agent (LangChain) buys a $289.00 tent from Halden with the Agent Payments Protocol. The customer approves on their phone, which signs two mandates: SD-JWT verifiable credentials (@sd-jwt/sd-jwt-vc) with key binding. Halden, the card wallet and the processor check every signature with keys made in this page; the payment itself is simulated. Turn on Intercept to hold messages and tamper with them.