{"type":"firestarter.listing","listing":{"id":"lst_cG4gYdcA","product_name":"McKee's 37 Double-Wall Stainless Steel Tumbler","category":null,"description":"Stay hydrated while you detail!\nHow would you like your beverage to stay cold for HOURS at a time? The McKee's 37 Double-Wall Stainless Steel Tumbler makes that impossible feat, possible! The durable high-grade, double-walled, stainless steel construction ensures that it can hold up to almost any task. Plus, the sweat-free design keeps it dry and easy to handle. This BPA-free tumbler has a shatter-proof and dishwasher-safe lid to prevent spills. It keeps drinks hot or cold longer than any conventional sports bottle.\n20 oz.\nAvailable while supplies last","images":["https://cdn.shopify.com/s/files/1/0587/0449/4755/files/mckee-cup.jpg?v=1704390003"],"price":19.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:45.149Z"},"share_url":"https://firestarter.network/l/lst_cG4gYdcA","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_cG4gYdcA' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy McKee's 37 Double-Wall Stainless Steel Tumbler' and a budget_max comfortably above $19.99 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}