{"type":"firestarter.listing","listing":{"id":"lst_IUtmfx34","product_name":"Elite XT","category":"Tennis String","description":"Diadem Elite XT is a firm co-poly with a six-pointed star shape.  Utilizing Star Core Technology the string combines a low-friction surface with maximum ball bite. This string is stiffer than Solstice Power, which results in an explosive response off the string bed and long lasting tension maintenance.   This string is ideal for advanced players looking for a solid feeling co-poly with incredible spin.Actual Cross Section\n \n\n\nLength: 40 feet / 12.2 m\n\n\n\n\nColor: Charcoal\n\n\n\n\nGauges Available \n\n\n18 (1.15mm) Best feel\n\n\n\n\n\n\n17 (1.20mm)\n\n\n\n\n\n16L (1.25mm)\n\n\n\n\n\n16 (1.30mm)\n\n\n\n\n\n15L (1.35mm) Most durable\n\n\n\n\n\n","images":["https://cdn.shopify.com/s/files/1/0253/6210/4402/files/EliteXT_grey_combined.jpg?v=1762439825"],"price":13.95,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:58.018Z"},"share_url":"https://firestarter.network/l/lst_IUtmfx34","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_IUtmfx34' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Elite XT' and a budget_max comfortably above $13.95 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."]}}