# Generated by API Evangelist (build-phrasing.py). Our phrasing, not observed demand. overlay: 1.0.0 info: title: API Evangelist conversational phrasing for Checkout API V3 Merchant Urls.validation API version: 1.0.0 extends: openapi/klarna-merchant-urls-validation-api-openapi.yml actions: - target: $.info update: x-apievangelist-phrasing: method: generated generated: '2026-09-26' generator: build-phrasing.py label: Generated by API Evangelist operations: 1 - target: $.paths['/merchant_urls.validation'].post update: x-apievangelist-phrasing: intent: Validate an order before purchase completes effect: read questions: - Can my store reject a checkout order right before the customer completes it? - What order data is sent to my validation callback before purchase? instructions: - text: Validate checkout order {order_id} before it completes. slots: order_id: requestBody.order_id - text: Check that cart {order_lines} totaling {order_amount} is still in stock before the purchase goes through. slots: order_lines: requestBody.order_lines order_amount: requestBody.order_amount method: generated generated: '2026-09-26'