AI payments research and architecture writing
Deep technical analysis of agentic commerce, payment protocol design, and the infrastructure behind autonomous checkout.
- four-party-modelagentic-commerceiso8583tap
Why the 4-party model breaks for agents
The card network architecture that has moved money for decades assumes a human is present. Agent payments do not replace the rails; they replace the trust signals around them.
- visavictapagentic-commerce
Visa Intelligent Commerce: a source-checked architecture map
What Visa Intelligent Commerce and Trusted Agent Protocol publicly document, what can be inferred, and what should stay marked as illustrative.
- visaagentic-commercetrusted-agent-protocoliso8583
How an AI agent buys something: the technical breakdown
A source-checked walkthrough of agentic checkout: Visa Intelligent Commerce, Trusted Agent Protocol, tokenization, HTTP signatures, AP2, ACP, and x402.