Ask your host, or the maker of the WordPress plugin that runs your bookings, shop or contact form, whether it offers an agent door (an MCP server or an API) on your own domain, and name it in your llms.txt.
A quick partial step: add paymentAccepted to your business markup, and say in words on your booking or order page how payment happens.
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An assistant that knows how payment works can tell its person what happens next; one that can pay finishes the job.
Ask your payment provider whether it takes agent payments (a token the person approves, which the agent passes on without seeing a card), and declare it on your own door: in UCP, as a payment handler.
Ask your payment provider whether it takes agent payments (a token the person approves, which the agent passes on without seeing a card), and declare it on a door of your own. Until then, a link to your own checkout counts partly.
What counts: Payment handlers of your own in your UCP profile, ACP delegated payment, AP2 or x402 declared on a door, or a tool that takes a payment (pay_invoice, create_payment). A checkout tool lets an agent order, not pay, and your website platform's standard payment handlers are the platform's. paymentAccepted in your markup, payment terms in words or a checkout link count partly.