# Agent-payment rail readiness > Whether your payment stack can complete an agent-initiated purchase over rails like AP2, Visa Trusted Agent Protocol, or Mastercard Agent Pay. - **Affects (funnel stage):** Choice - **Evidence:** reported - **Confidence:** High - **Impact:** 3/3 - **Status:** active - **Last verified:** 2026-07-08 ## Per-platform status Undocumented platforms show "unknown" - honest unknowns, never invented. | Platform | Status | Notes | Source | | --- | --- | --- | --- | | ChatGPT | unknown | Not documented by this platform. | - | | Gemini / Google AI Mode | unknown | Not documented by this platform. | - | | Perplexity | unknown | Not documented by this platform. | - | | Copilot | unknown | Not documented by this platform. | - | | Claude | unknown | Not documented by this platform. | - | ## Evidence and sources - [AP2: Agent Payments Protocol](https://ap2-protocol.org) (2026-07-07) ## 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 - [Confirm your payment stack can complete an agent-initiated purchase (AP2 / Visa Trusted Agent / Mastercard Agent Pay).](https://agentmint.net/tools/agentic-readiness-checklist/#a-protocol-presence-04) (Readiness) ### Related signals - [ACP feed and checkout readiness](https://agentmint.net/signals/acp-readiness/) - [UCP profile and order-management readiness](https://agentmint.net/signals/ucp-readiness/) - [Guest checkout completability](https://agentmint.net/signals/guest-checkout/) ## Notes These rails gate purchase completability (selectability), not the comparison itself.