--- title: "WooCommerce agent checkout: how buyer-reviewed payment works — citelayer®" url: "https://citelayer.ai/woocommerce-agent-checkout-buyer-reviewed-rest-commerce/" date: 2026-10-06 --- # WooCommerce agent checkout: how buyer-reviewed payment works An agent can help a shopper find a product and prepare an order. The store still needs a clear point where the buyer reviews what they are buying and completes payment. That is the checkout model in citelayer Pro for WooCommerce v1.2.19. The add-on exposes catalog data and controlled cart operations through a REST commerce API, then hands the customer into WooCommerce’s own payment flow. It gives developers a defined integration surface while keeping the final payment review with the buyer. The route from product search to payment ---------------------------------------- A typical integration moves through these stages: 1. Read the store’s capabilities and integration contracts. 2. Search the catalog and retrieve product details. 3. Validate the proposed items and calculate the cart. 4. Use a signed, short-lived draft cart when the integration needs a cart resource. 5. Prepare checkout and receive a WooCommerce payment URL. 6. Let the buyer review and pay through the store. Each step has a different job. Catalog search answers what is available. Cart validation checks whether the proposed products and quantities are acceptable. Calculation returns totals for the supplied payload. Creating a pending order prepares a payment handoff; it does not establish that payment has succeeded. Check the store’s contract first -------------------------------- Install the [free citelayer plugin](https://wordpress.org/plugins/citelayer/) and the [WooCommerce add-on](https://citelayer.ai/downloads/citelayer-pro-for-woocommerce-ai-commerce-visibility/) on a controlled test store before connecting a third-party agent. Confirm the add-on’s settings and licensing state, then inspect the advertised surface. The current release provides these read-only contract endpoints under your WordPress REST base: ``` /wp-json/citelayer/v1/ucp/capabilities /wp-json/citelayer/v1/ucp/coverage /wp-json/citelayer/v1/ucp/auth /wp-json/citelayer/v1/ucp/openapi.json ``` Open the capabilities response to see what the store declares available. Use coverage to check the implemented and not-claimed areas. Read the auth contract before sending requests to signed routes, and use OpenAPI for request and response details. A published discovery file alone does not establish that every commerce operation is enabled or that a particular agent can use it. The [Universal Commerce Protocol specification](https://ucp.dev/specification/overview/) describes the wider protocol. Your store’s versioned implementation contract tells you which parts this integration actually supplies. Make a small catalog test ------------------------- Choose one simple product and, if the store uses variations, one actual purchasable variation. Check the product’s visibility, price and stock in WooCommerce, then compare them with the API response. The add-on applies catalog visibility, stock, purchasability and its exposure policy to the public surface. A variable parent is not the same item as a purchasable variation. Grouped and external products also need their own treatment; an integration should not assume that every result can go straight into checkout. Use real catalog data for this check. Do not invent a rating, product brand or discount to make the agent’s answer look more complete. Validate before preparing an order ---------------------------------- The stateless validation and calculation endpoints work on a proposed cart payload. They do not edit the shopper’s browser cart. This lets an integration check a proposal without depending on a shared browser session. When the workflow needs persistent cart state, the release also provides signed, short-lived draft-cart resources. Their requests use the published authentication and scope contract. Follow that contract rather than copying an unsigned catalog request and changing its HTTP method. On your test store, start with a valid product and quantity. Then check an invalid quantity or an unavailable item and inspect the error response. The integration needs to handle rejection before it offers the buyer a payment step. Never treat an earlier catalog response or shipping estimate as a promise that checkout will accept an unchanged order later. Keep the payment handoff visible -------------------------------- When checkout is enabled, the add-on can create a pending WooCommerce order and return its native `payment_url`. Show that handoff clearly to the buyer. They review the order and complete payment through the WooCommerce store and its configured payment methods. The current release does not perform native autonomous payment or verify AP2 payment mandates. A pending order and a payment link are intermediate states. An agent should use the supported status contract to distinguish them from confirmed payment. Signed lifecycle routes support checkout status and cancellation of eligible unpaid pending UCP orders. Signed order reads provide a limited, privacy-conscious view of UCP-created orders. These are defined operations, rather than broad permission to manage customer orders, returns or disputes. Decide whether this fits your workflow -------------------------------------- citelayer’s supported commerce transport here is REST over HTTPS. The linked context and discovery documents help describe the store; they do not turn the installation into an MCP JSON-RPC, A2A or embedded-protocol implementation. For a developer preparing an integration, the next useful step is a test with the actual store contract: discover one product, validate a cart, inspect the totals and confirm where buyer review takes place. For a merchant choosing an add-on, ask who operates the agent and which operations it will request. [See citelayer Pro for WooCommerce](https://citelayer.ai/downloads/citelayer-pro-for-woocommerce-ai-commerce-visibility/) for the shipped feature set and requirements. Connect the agent after its test results match the store’s intended catalog, authentication and payment behavior.