{"type":"firestarter.listing","listing":{"id":"lst_ZKrtT53h","product_name":"Impulse","category":"Tennis String","description":"Diadem Impulse offers a perfect blend of comfort, touch, power, and feel.  Players with slow to moderate swing speeds will benefit from the power of Impulse. Designed when an extra layer of polyamide coating to for added durability.  It's also great for all types of players that love the classic gut-like feel of a multifilament. Tennis elbow sufferers looking for a softer, more comfortable string should also give Impulse a try. \n\n\nLength: 40 feet / 12.2 m\n\n\nColors: Teal, Natural\n\nGauges Available: 17 (1.25mm)16 (1.32mm)\n\nType: Multifilament\n","images":["https://cdn.shopify.com/s/files/1/0253/6210/4402/files/Impulse_natural_combined.jpg?v=1762439830"],"price":14.95,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:58.014Z"},"share_url":"https://firestarter.network/l/lst_ZKrtT53h","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_ZKrtT53h' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Impulse' and a budget_max comfortably above $14.95 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."]}}