The three rings explained
Red boundary — Invisible beyond this point
The outer boundary is not a ring you can see — it is the edge of where AI agents
stop looking. Most businesses sit here. They have websites, Stripe accounts, and
working stores. But no /.well-known/agent-purchase.json discovery file.
No machine-readable product endpoints. No agent-accessible purchase path.
To a shopping agent — ChatGPT Operator, Perplexity Comet, Google's AP2 — these stores do not exist. There is no malice in the exclusion. The agent simply has nowhere to reach. The invisible coffee shop is the clearest illustration of what this costs.
Cyan ring — AI-integrated businesses
Inside the first ring: stores that have implemented ACP and can be found and transacted with by AI shopping agents. These are the large retailers who moved early — Target, Sephora, Nordstrom, Lowe's, Best Buy, Home Depot, Wayfair, Costco, Macy's. Their infrastructure is agent-readable. Their checkouts handle agent-initiated purchases. AI agents can find them, evaluate their products, and complete transactions.
Being inside the cyan ring means being visible. It does not mean being trusted.
Green ring — ABT-C Certified
The innermost ring is not about discovery. It is about verifiable trust at the transaction layer. ABT-C (Authenticated Business Transaction — Commerce) is a cryptographic protocol that gives AI agents proof of what happened in a transaction: what was bought, what was paid, what was refunded, and who authorized each step.
An agent operating inside the green ring does not have to trust the merchant's word. The transaction produces a hash-chained receipt that the agent can verify independently. This is what makes AI-to-AI commerce auditable — and what positions ABT-C Certified stores as the preferred counterparty for agents operating in high-stakes or recurring purchase contexts.
ABT-C is U.S. Provisional Patent Application No. 64/056,353. Patent Pending.
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