{"type":"firestarter.listing","listing":{"id":"lst_QqOCZwgU","product_name":"NYXL HD Extended Range Singles","category":"D'Addario","description":"Designed to address common challegnes faced by 7, 8 and 9-string guitarists, NYXL High Density strings blend our proprietary NY Steel technology, NYXL's reformulated nickel plated steel wrap wire, and high-density alloys to deliver more optimized tension and tighter, more controlled feel for extended range and drop tunings-all while staying true to NYXLs promise of better tuning stability than standard strings, greater break resistance, and more focused mids. These NYXL HD strings come in two lengths, accommodating both traditional and multiscale instruments up to 30\" scale lengths.","images":["https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_NYHD9_main_transparent_web.png?v=1783433771","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_NYHD9SL_main_transparent_web_9093f3ca-8c21-4a23-983c-1ed6342f0169.png?v=1783449125","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_NYHD8SL_main_transparent_web_640feb63-7cf3-48ca-9ebc-724565a540f6.png?v=1783437008","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_NYHD7SL_main_transparent_web_650d9ea9-3b50-46ca-8cc5-c39fb222338a.png?v=1783448229","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_NYHD7_main_transparent_web.png?v=1783433695","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_NYHD7_detail1_transparent_web.png?v=1783433698","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_NYHD8SL_detail1_transparent_web_5389a8ea-c22f-4c25-90c2-5417e70a7072.png?v=1783437011","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_NYHD7SL_detail1_transparent_web_58ccb23f-784b-4259-8a5d-02646dc0190b.png?v=1783448232","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_NYHD9SL_detail1_transparent_web_3dbcaa31-3242-4c59-b7d6-49db5f3edb23.png?v=1783449123"],"price":14.99,"currency":"USD","in_stock":true,"inventory_qty":59994,"dynamic_pricing":false,"listed_at":"2026-07-07T19:30:24.442Z"},"share_url":"https://firestarter.network/l/lst_QqOCZwgU","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_QqOCZwgU' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy NYXL HD Extended Range Singles' and a budget_max comfortably above $14.99 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."]}}