generated: '2026-07-18' method: searched status: published source: https://www.blume.com/agents.md notes: Blume's storefront (blume.com, Shopify store blume-box.myshopify.com) publishes a live Model Context Protocol server implementing the Universal Commerce Protocol (UCP) shopping service. The endpoint is advertised in /.well-known/ucp and in /agents.md. Enumerating tools via MCP tools/list requires a UCP agent profile handshake (the endpoint returned invalid_profile_url without one); the tools below are the buyer flow documented verbatim in agents.md plus the UCP shopping capabilities advertised in the store's UCP merchant profile. Platform-provided by Shopify, served on Blume's own domain and store id. server: name: blume-ucp-shopping protocol: Universal Commerce Protocol (UCP) ucp_version: '2026-04-08' ucp_supported_versions: - '2026-04-08' - '2026-01-23' transport: http url: https://www.blume.com/api/ucp/mcp canonical_url: https://blume-box.myshopify.com/api/ucp/mcp discovery: https://www.blume.com/.well-known/ucp openrpc_schema: https://ucp.dev/2026-04-08/services/shopping/mcp.openrpc.json auth: UCP agent profile handshake required (buyer-approval invariant on checkout) tools: - name: search_catalog description: Search the store catalog for products matching the buyer's intent. capability: dev.ucp.shopping.catalog.search source: agents.md - name: create_cart description: Create a cart and add desired items. capability: dev.ucp.shopping.cart source: agents.md - name: create_checkout description: Start the purchase flow for a cart. capability: dev.ucp.shopping.checkout source: agents.md - name: update_checkout description: Set shipping address and method on an in-progress checkout. capability: dev.ucp.shopping.fulfillment source: agents.md - name: complete_checkout description: Finalize the purchase; buyer must approve payment (human-in-the-loop required). capability: dev.ucp.shopping.checkout source: agents.md capabilities: - dev.ucp.shopping.cart - dev.ucp.shopping.checkout - dev.ucp.shopping.fulfillment - dev.ucp.shopping.discount - dev.ucp.shopping.order - dev.ucp.shopping.catalog.search - dev.ucp.shopping.catalog.lookup deployment: mode: remote endpoint: https://www.blume.com/api/ucp/mcp verified: probed probe: live tools: 13 checked: '2026-08-12' source: catalog MCP census