AP2 from First Principles Blog https://diegozuluaga.dev/ap2/blog AP2 from First Principles Blog Sun, 24 May 2026 00:00:00 GMT https://validator.w3.org/feed/docs/rss2.html https://github.com/jpmonette/feed en <![CDATA[Learning AP2 from first principles]]> https://diegozuluaga.dev/ap2/blog/learning-ap2-from-first-principles https://diegozuluaga.dev/ap2/blog/learning-ap2-from-first-principles Sun, 24 May 2026 00:00:00 GMT I'm learning the Agent Payments Protocol the way that sticks: build each piece by hand, then map it to the official SDK. This site is the public record.

The plan is simple and repeatable. Every lesson follows one spine — Frame · Build · Map · Inspect · Check — so the concepts compound instead of piling up. v1 covers the foundations: why agent payments need a protocol, the cast of roles and the two journeys, and the heart of it all — mandates, the unit of trust. From there: selective disclosure (SD-JWT), mandate chains and receipts, the full Human-Present flow, autonomous Human-Not-Present delegation, and how AP2 rides on A2A.

Start at Lesson 00, or see the roadmap.

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