Stripe Checkout

stripe.com

Stripe registers tools on its payment pages, so an agent can read an invoice, apply a code and fill the form instead of clicking through it. It covers full-page and embedded Checkout, Elements and the hosted invoice page.

A payment page only exists inside a live checkout session, so our crawler never sees one. These definitions are Stripe's own, read out of the scripts its checkout and invoice pages load, where the tools sit behind a flag Stripe turns on per session. What a page offers varies with the payment UI and with what the shopper has picked, so read the tools off the page rather than assume this list. Checkout carries the first four; the hosted invoice page carries the last two.

Stripe's WebMCP guide How Stripe is designing checkout for AI agents

6 tools

apply_promo_codeApply a promotion/coupon code. Poll UI state after applying to see if it was successful.

set_link_pay_tokenSubmit a Link Pay Token for this payment.

get_link_pay_token_merchantread-onlyGet the merchant account identifier for this payment.

get_invoice_line_itemsread-onlyuntrusted contentGet all displayable line items on the current Stripe invoice. Each amount is in the line item's currency's minor units.

submit_paymentconsequentialSubmit the invoice payment form and complete the payment