Signal
Agent-payment rail readiness
Whether your payment stack can complete an agent-initiated purchase over the rail each engine actually documents: ACP Delegated Payments for ChatGPT, UCP checkout for Google, and AP2 as the cross-industry intent layer underneath. Other agent-payment rails exist and are tracked on the payment-protocols page.
Per-platform status
Where a platform documents relevant behavior, its status and source are shown. Undocumented platforms show "unknown" - honest unknowns, never invented.
| Platform | Status | Notes | Source |
|---|---|---|---|
| ChatGPT | Partial | OpenAI documents its own rail, Delegated Payments with an encrypted token through Stripe, Adyen or Braintree, plus keeping your own processor. It does not reference AP2, Visa or Mastercard agent rails. | Source (opens in new tab) · verified 2026-09-18 |
| Gemini / Google AI Mode | Partial | Google documents UCP native and embedded checkout with the merchant as merchant of record. On payment it says UCP supports secure payments using tokenization and lets merchants use existing payment integrations through payment handlers. No other agent-payment rail is referenced. | Source (opens in new tab) · verified 2026-09-18 |
| Perplexity | Unknown | Not documented by this platform. | - |
| Copilot | Unknown | Not documented by this platform. | - |
| Claude | Unsupported | The reference agent does not place orders or charge cards. Checkout hands the shopper to the store's own route or hosted URL, and the model never sees it. | Source (opens in new tab) · verified 2026-09-02 |
Evidence and sources
This signal is typed reported (High confidence).
- AP2: Agent Payments Protocol (opens in new tab) · 2026-07-07
- OpenAI Agentic Checkout Spec (opens in new tab) · read 2026-09-18
- Google: Universal Commerce Protocol for merchants (opens in new tab) · read 2026-09-18
How to act on this
Ask your payment provider in writing which agent-payment rails your account supports today, record the dated answer, and re-confirm periodically since support is still evolving.
Related checklist items
Notes
These rails gate purchase completability (selectability), not the comparison itself.