What is the Agent Payments Protocol (AP2)?
Updated By Akkrev
AP2 is an open protocol, started by Google, for AI agents to make payments with a verifiable record of what the person authorised them to buy.
The Agent Payments Protocol (AP2) is a standard for letting AI agents pay for things while keeping a signed record of what the user actually approved: the item, the price limit, the merchant. It’s meant to answer the question merchants and banks worry about: did the person really ask the agent to buy this?
Google introduced AP2 and donated it to the FIDO Alliance in April 2026. At the time of writing, Google is the main company shipping it.
How agents pay today
Most consumer agents don’t use AP2 yet. Meta’s Muse, for example, pays through Link by Stripe, which issues one-time card numbers so the website never sees the guest’s real card. Other agents hand the payment step back to the user.
What it means for hotels
For a hotel, an agent payment usually looks like an ordinary card payment through its booking engine. What matters more right now is that the agent can reach the payment page at all, with the correct total and policies.
Related: agentic commerce, Agentic Commerce Protocol.
Why it matters for AI visibility
Payment protocols matter once an agent decides to book. Getting chosen in the first place depends on AI visibility.