{"type":"firestarter.listing","listing":{"id":"lst_EgPlzN6Y","product_name":"1940's 18KY DIAMOND RING 05ct. center","category":"Vintage","description":"1940S, 18KY DIAMOND RING, Diamond Carat weight 0.9ct\nCenter  0.50ct  J, SI\nSize 6.75\nSold As is\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n","images":["https://cdn.shopify.com/s/files/1/1442/5650/files/IMG_1802.png?v=1755636990","https://cdn.shopify.com/s/files/1/1442/5650/files/IMG_3169.jpg?v=1755637007"],"price":4600,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:29.147Z"},"share_url":"https://firestarter.network/l/lst_EgPlzN6Y","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_EgPlzN6Y' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 1940's 18KY DIAMOND RING 05ct. center' and a budget_max comfortably above $4600.00 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."]}}