DIAMOND How To Exploit "Agentic Commerce" Payment Protocols

[TheMekanic]

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As of 2026, Google and Visa have launched Agent-Initiated Payment protocols. These allow AI agents to pay without a human-in-the-loop. These endpoints often have higher rate limits.
Steps to Exploit:

1. Target the Gateway: Look for
   
   Code:

   payment.visa.com/v1/agent-checkout
   .
   
2. Tokenized Identity: These transactions use "Tokenized IDs" which bypass traditional 3DS/MFA checks if the agent is already "Authorized."
   
3. The Bypass: Use a captured Session ID from a legitimate login and wrap it in the
   
   Code:

   Agent-Metadata
   header to trigger an "Autonomous Transaction."