{"type":"firestarter.listing","listing":{"id":"lst_VsdHywI1","product_name":"Kaplan Gold-Plated Violin E Strings, 4/4 Scale","category":"D'Addario","description":"Kaplan Gold-Plated Violin E strings use a precision plating process to provide the warm rich sound expected from high-quality gold-plated E strings. These strings provide a rich, vibrant tone for a variety of musical needs. Available in ball and loop-end varieties.","images":["https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K311GL-44M_main_transparent.png?v=1773014493","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K311GB-44M_main_transparent.png?v=1773014494","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_kaplan_E_string_EnhancedImage1_transparent_web_755601a3-677c-4b12-9cf3-2574fa77076d.png?v=1773014494","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_kaplan_E_string_EnhancedImage2_transparent_web_e4ac0aeb-d337-443d-ab70-4d730f92e8d8.png?v=1773014494","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_kaplan_E_string_EnhancedImage3_transparent_web_200c45da-672d-4002-9887-fb85f92bc3e6.png?v=1773014495","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_kaplan_E_string_EnhancedImage4_transparent_web_e7314ade-d51d-4138-82b6-d91bdaf7e9e0.png?v=1773014495"],"price":11.99,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:57.523Z"},"share_url":"https://firestarter.network/l/lst_VsdHywI1","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_VsdHywI1' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Kaplan Gold-Plated Violin E Strings, 4/4 Scale' and a budget_max comfortably above $11.99 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."]}}