{"type":"firestarter.listing","listing":{"id":"lst_rl73zNy5","product_name":"Treble Half Set, Pro-Arté Hybrid Carbon Classical Guitar Strings","category":"D'Addario","description":"Pro-Arté Hybrid Carbon treble half sets provide the same superior intonation, responsive attack, and modern projecting tone as Pro-Arté Carbon, yet utilizes two different materials across the three strings. The combination provides a unique tonal bend. This half set includes both flourocarbon and clear nylon treble strings.","images":["https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_HBH-3T_main_transparent.png?v=1773013721","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_HBN-3T_main_transparent.png?v=1773013721","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_HGN-3T_main_transparent.png?v=1773013721","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_HGH-3T_main_transparent.png?v=1773013723"],"price":7.59,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:57.317Z"},"share_url":"https://firestarter.network/l/lst_rl73zNy5","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_rl73zNy5' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Treble Half Set, Pro-Arté Hybrid Carbon Classical Guitar Strings' and a budget_max comfortably above $7.59 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."]}}