{"type":"firestarter.listing","listing":{"id":"lst_jvudo5PN","product_name":"U4s","category":"Universal","description":"A quad driver hybrid UIEM featuring ground-breaking patented technologies originally developed for our flagship products in order to bring a wider audience closer to their music. U4s explores a bold new color aesthetic for 64 Audio. The Slate Blue shell color was influenced by some of the world’s most beautiful blue- dial timepieces while the unique faceplate pattern is inspired by Muonionalusta meteorite fragments. Both the faceplate and shell’s illuminant properties give it a unique tone in varying lighting conditions.","images":["https://cdn.shopify.com/s/files/1/0411/4717/0966/products/U4s-PLP-2.jpg?v=1668711200","https://cdn.shopify.com/s/files/1/0411/4717/0966/products/U4s-Floating-2.jpg?v=1668711200","https://cdn.shopify.com/s/files/1/0411/4717/0966/products/U4s-Floating-3.jpg?v=1668711200","https://cdn.shopify.com/s/files/1/0411/4717/0966/products/U4s-Gallery-Included_WEB.webp?v=1669232723"],"price":1199,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:54:58.653Z"},"share_url":"https://firestarter.network/l/lst_jvudo5PN","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_jvudo5PN' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy U4s' and a budget_max comfortably above $1199.00 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."]}}