Find stores where an AI agent can complete checkout for running shoes, beauty, clothing, home goods, or another product need. Reads ARC's directory of real HTTP agent-catalog checks. Returns only stores checked within thirty days whose catalog found a product and returned a checkout link. No purchase completed; availability of your specific item is not guaranteed. Includes checkoutWebmcp (Shopify-only status, nullable detected, tools, reason; buyer approval required) and a webmcp boolean for Shopify storefront adapter detection, not a live browser-agent session. No login, browser scan or model call.