{"type":"firestarter.listing","listing":{"id":"lst_Gy6CG_T5","product_name":"Custom Phosphor Bronze Guitar String Sets","category":null,"description":"Capture a rich, bright, and well-balanced tone with D'Addario Phosphor Bronze Guitar Strings. Made with a phosphor bronze alloy, these strings deliver exceptional warmth, clarity, and long-lasting durability. Perfect for acoustic players, the Phosphor Bronze set provides a crisp, full sound that shines across all playing styles, whether strumming or fingerpicking. Build your Custom Phosphor Bronze String set now!","images":["https://cdn.shopify.com/s/files/1/0669/6042/5025/files/DS_CUSTOMAPB6_Main_transparent_web.png?v=1773014081","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/DS_CUSTOMAPB12_Main_transparent_web.png?v=1773014082","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/DS_CUSTOMAPB7_Main_transparent_web.png?v=1773014082","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/DS_CUSTOMAPB8_Main_transparent_web.png?v=1773014083"],"price":13.8,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:57.311Z"},"share_url":"https://firestarter.network/l/lst_Gy6CG_T5","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_Gy6CG_T5' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Custom Phosphor Bronze Guitar String Sets' and a budget_max comfortably above $13.80 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."]}}