{"type":"firestarter.listing","listing":{"id":"lst_ed8HV0Z1","product_name":"Custom EXL Nickel Guitar String Sets","category":null,"description":"D'Addario nickel-plated steel guitar strings offer a perfect blend of warmth and brightness, delivering clear, crisp tones with enhanced sustain. Designed for durability and smooth playability, these strings provide a balanced sound ideal for a variety of genres, ensuring a reliable performance every time you play. Build your own Custom EXL String set now!","images":["https://cdn.shopify.com/s/files/1/0669/6042/5025/files/DS_CUSTOMEXL12_Main1a_transparent_web.png?v=1773014079","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/DS_CUSTOMEXL6_Main_transparent_web.png?v=1773014079","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/DS_CUSTOMEXL7_Main_transparent_web.png?v=1773014080","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/DS_CUSTOMEXL8_Main_transparent_web.png?v=1773014080","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/DS_CUSTOMEXL9_Main_transparent_web.png?v=1773014081"],"price":11.7,"currency":"USD","in_stock":true,"inventory_qty":49995,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:57.308Z"},"share_url":"https://firestarter.network/l/lst_ed8HV0Z1","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 ","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_ed8HV0Z1' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Custom EXL Nickel Guitar String Sets' and a budget_max comfortably above $11.70 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."]}}