{"type":"firestarter.listing","listing":{"id":"lst_OUP18-4z","product_name":"Thick Cable Chain 18\" Necklace 2.1mm in 14k Yellow Gold","category":"Chains","description":"This everyday necklace staple is our favorite. The best chain style for daily wear, and a gorgeous base for layering your favorite large charms and pendants. This chain is best for largeer sized charms over 20mm in length. Available in 14k yellow gold.","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/2_28mm-cable-chain-necklace_2_28mm-cable-chain-necklace_valley_rose.jpg?v=1715697969"],"price":1990,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:33.270Z"},"share_url":"https://firestarter.network/l/lst_OUP18-4z","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_OUP18-4z' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Thick Cable Chain 18\" Necklace 2.1mm in 14k Yellow Gold' and a budget_max comfortably above $1990.00 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."]}}