Product Manager | Fintech, AI, Blockchain, Systems, Strategy Planning, Digital Transformation Please DM projects directly for collab
Metaverse/Web3
Joined October 2021
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Google Cloud's Agent Payments Protocol (AP2) just solved something ACP couldn't: proving an AI agent's spending authority without routing everything through one company's database.
60+ orgs backing it — Mastercard, PayPal, Coinbase, Salesforce. Here's the core idea. 🧵 [1/8]
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Full technical deep-dive — the JSON-LD credential structure, the crypto verification chain, the pilot data — here: 🔗medium.com/@jhuang.yuhui89/u… [8/8]
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For enterprises wondering how to actually adopt this: I'd roll it out in 3 phases — human-in-the-loop approval, then prepaid capped wallets, then full on-chain session keys. Each step caps the blast radius of the one before it. [7/8]
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Important distinction: AP2 isn't a money-routing hop between Web3 and Web2. It's a trust layer that spans BOTH — a separate settlement utility (like Stripe's Bridge) handles actual currency conversion. [6/8]
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This isn't theoretical. Jan 2026: Mastercard + Santander ran Europe's first live autonomous-agent payment, end to end.
Zero fraud spikes under simulated prompt injection. Sub-500ms stablecoin settlement. Audit logs that satisfied EU AI Act requirements out of the box. [5/8]
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Why it matters: biometric auth at setup means banks can grant a real Strong Customer Authentication exemption. No more real-time OTP breaking your "autonomous" agent mid-purchase. [4/8]
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That last point matters. This isn't 3 steps that hand off and vanish. The Payment Mandate literally carries cryptographic proof of the other two. Closer to a braided cord than a relay race — hence the name. [3/8]
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AP2 splits every transaction into 3 cryptographically linked mandates:
🔐 Intent — human signs on-session, biometric, sets the budget
🛒 Cart — agent builds it, locked to the intent
💳 Payment — bundles proof of BOTH prior mandates inside itself [2/8]
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Stripe + OpenAI's Agentic Commerce Protocol lets AI agents shop without ever touching your card number.
I spent time with the actual mechanics. It's a great v1 — but 3 friction points stand in the way of it going mainstream. 🧵 [1/7]
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This also happens to be the shape regulators are pushing toward — EU AI Act auditability, MAS's push for instant local clearing, PSD3's SCA exemptions. The compliant path and the good UX path are converging. [6/7]
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Full breakdown of the architecture, the friction points, and the regulatory landscape here: 🔗medium.com/@jhuang.yuhui89/b… [7/7]
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