{"type":"firestarter.listing","listing":{"id":"lst_ck-jfA6u","product_name":"18k Gold Filled Herringbone Necklace","category":"Necklaces","description":"The 18k gold-filled herringbone is perfect for layering or wearing alone. \n\nMaterial: 18k Gold Filled\nLength: Available in 16\", 18\", and 20\". \n\n Available in midi (4mm width) and regular (6mm width)\n\nLead & Nickel Free\n\nTarnish Resistant\n\n\n Gold Filled 18k is bonded to other metals (typically a fine jewelers brass core) and is 30 - 50 times thicker than high quality plated gold. Durable & tarnish resistant, gold filled quality product is suitable for daily wear and is also water resistant. Yes, you can get them wet! Filled gold jewelry is beautiful, affordable alternatives to solid gold, and can be worn by people with sensitive skin too!","images":["https://cdn.shopify.com/s/files/1/0248/5334/8403/files/Gold-Filled-Herringbone-Necklace-Necklaces-1.jpg?v=1767741852","https://cdn.shopify.com/s/files/1/0248/5334/8403/products/Gold-Filled-Herringbone-Necklace-Necklaces-2.png?v=1767664241","https://cdn.shopify.com/s/files/1/0248/5334/8403/files/Gold-Filled-Herringbone-Necklace-Necklaces-3.jpg?v=1767741855","https://cdn.shopify.com/s/files/1/0248/5334/8403/products/Gold-Filled-Herringbone-Necklace-Necklaces-1.png?v=1767663305","https://cdn.shopify.com/s/files/1/0248/5334/8403/files/Gold-Filled-Herringbone-Necklace-Necklaces-5.jpg?v=1767741857","https://cdn.shopify.com/s/files/1/0248/5334/8403/files/Gold-Filled-Herringbone-Necklace-Necklaces-6.jpg?v=1767806474","https://cdn.shopify.com/s/files/1/0248/5334/8403/files/Gold-Filled-Herringbone-Necklace-Necklaces-7.jpg?v=1767741861"],"price":46,"currency":"USD","in_stock":true,"inventory_qty":59994,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:36.485Z"},"share_url":"https://firestarter.network/l/lst_ck-jfA6u","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_ck-jfA6u' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 18k Gold Filled Herringbone Necklace' and a budget_max comfortably above $46.00 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."]}}