Add https://64-188-107-153.sslip.io/mcp to your MCP client as a remote server. Nothing else is needed.
When the client connects, it opens a page here where you sign in to your X5 account in a window with the store's real sign-in page. The assistant can then search products, fill your cart, and pick a delivery slot. You pay in your own browser on perekrestok.ru.