{"type":"firestarter.listing","listing":{"id":"lst_igai24js","product_name":"Kaplan Forza Viola String Set, Long Scale, Medium Tension","category":"D'Addario","description":"Take your sound from neutral to nuanced with Kaplan Forza viola strings. Kaplan Forza offers a powerful, sweet tone, with a clean, fast response for superb control and versatility. Coupled with their quick break-in period and enhanced projection, Kaplan Forza strings provide a professional level of performance, which allows violists to easily convey their instrument’s rich tonal palette. Kaplan strings are available in a range of sizes to suit most advancing players.","images":["https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K411-LM_main_transparent.png?v=1773013456","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_KS411-LM_main_transparent.png?v=1773013456","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K412-LM_main_transparent.png?v=1773013456","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K413-LM_main_transparent.png?v=1773013457","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K414-LM_main_transparent.png?v=1773013458","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K410-LM_main_transparent.png?v=1773013458","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K411-LM_detail1_transparent.png?v=1773013459","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K412-LM_detail1_transparent.png?v=1773013459","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K413-LM_detail1_transparent.png?v=1773013459","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K414-LM_detail1_transparent.png?v=1773013460","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K410-LM_detail1_transparent_d5ea27ff-4b7c-4138-ada5-67d014981851.png?v=1773013460","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K411-LM_detail2_transparent.png?v=1773013460","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K412-LM_detail2_transparent.png?v=1773013461","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K413-LM_detail2_transparent.png?v=1773013461","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K414-LM_detail2_transparent.png?v=1773013462","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_K410-LM_detail2_transparent.png?v=1773013462","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_kaplan_family_EnhancedImage1_transparent_web_2470817b-3fce-4ae9-bd53-ba473a0c8572.png?v=1773013462","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/do_kaplan_family_EnhancedImage2_transparent_web_15f09970-2f23-42f9-bc88-75e5f8ce8e5a.png?v=1773013463"],"price":26.89,"currency":"USD","in_stock":true,"inventory_qty":59994,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:57.322Z"},"share_url":"https://firestarter.network/l/lst_igai24js","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_igai24js' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Kaplan Forza Viola String Set, Long Scale, Medium Tension' and a budget_max comfortably above $26.89 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."]}}