{"type":"firestarter.listing","listing":{"id":"lst_8cbsUHde","product_name":"08-38 Extra Super Light, XL Nickel Electric Guitar Strings","category":"D'Addario","description":"XL Nickel Wound electric guitar strings are the standard against which all other strings are measured. Our best-selling electric set, XL Nickel has been revered by players everywhere since 1974. Made with a high carbon steel core and nickel-plated steel wrap wire, XL Nickel strings have a bright, versatile tone, ideal for a wide variety of musical styles. 8-38 Extra Super Light is our lightest electric gauge, providing the lightest possible tension and greatest ease of play.","images":["https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_EXL130_main_transparent.png?v=1773013223","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_EXL130_detail1_transparent.png?v=1773013223","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_EXL130_detail2_transparent.png?v=1773013223","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_EXL130_detail3_transparent.png?v=1773013224","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_EXL_EnhancedImage1_transparent_web_9a0a7c54-6649-4520-a34c-de18712e4757.png?v=1773013224","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_EXL_EnhancedImage2_transparent_web_d75e21a8-c112-4654-9bd8-e24b1aa988c8.png?v=1773013225","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_EXL_EnhancedImage3_transparent_web.png?v=1773013225","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ds_EXL_EnhancedImage4_transparent_web.png?v=1773013226"],"price":8.49,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:57.516Z"},"share_url":"https://firestarter.network/l/lst_8cbsUHde","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_8cbsUHde' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 08-38 Extra Super Light, XL Nickel Electric Guitar Strings' and a budget_max comfortably above $8.49 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."]}}