# Agent Instructions — Vintage Loop > Guidance for autonomous AI shopping agents transacting on this store: commerce protocol, catalog browsing, and checkout. ## Commerce Protocol (UCP) - Discovery: `GET https://vintageloop.it/.well-known/ucp` - MCP endpoint: `POST https://vintageloop.it/api/ucp/mcp` ### Supported UCP versions - 2026-08-25 (latest stable) - 2026-04-08 - 2026-01-23 ## Read-only browsing - All products: `GET /collections/all` - Product (JSON): `GET /products/{handle}.json` - Sitemap: https://vintageloop.it/sitemap.xml Pricing and availability are returned in EUR. ## Product Variants Product variant options (e.g. size, color, material) are exposed as structured data (schema.org additionalProperty) on each product page. ## Checkout Your agent can complete the checkout directly when eligible. When a purchase requires escalation or review, the agent must redirect the buyer to the merchant's prefilled checkout to complete the order. ## Policies - Returns: Withdrawal must be requested within 14 days of delivery. Items must be sent back within 14 days of notifying withdrawal. Return shipping is covered by the customer. Standard delivery costs are refunded. Declared exclusions: Certificato di autenticità Entrupy già emesso: il relativo importo non è rimborsabile. Il diritto di recesso sull'articolo acquistato resta esercitabile. - Shipping: Shipping is free for orders of 499 EUR or more, otherwise a flat rate of 10 EUR, in transit 5 days (plus 2 days of processing), to IT. Shipping is a flat rate of 30 EUR, in transit 5 days (plus 2 days of processing), to AT, BE, BG, HR, CY, CZ, DK, EE, FI, FR, DE, GR, HU, IE, LV, LT, LU, MT, NL, PL, PT, RO, SK, SI, ES, SE. ## Full Catalog Product and collection catalog in llms.txt format: https://vintageloop.it/llms.txt Full product data (SKU, specifications, FAQ) for RAG/large-context agents in llms-full.txt format: https://vintageloop.it/llms-full.txt --- ## About this store Online store built on Shopify. Vintage Loop è un negozio di borse e accessori di lusso second-hand ad Arcore, in provincia di Monza e Brianza. Ogni articolo è un pezzo unico, controllato prima della vendita, fotografato singolarmente e descritto nelle sue condizioni reali, con certificato di autenticità Entrupy disponibile su richiesta. - Legal name: Vintage Loop s.n.c. di Lorenzo Lupo & C. - Official profiles: https://www.instagram.com/vintageloop_arcore/