{"type":"firestarter.listing","listing":{"id":"lst_CjI1yx2O","product_name":"Medium Cable Chain 18\" Necklace 1.7mm in 18k Yellow and White Gold","category":"Chains","description":"This everyday necklace staple is our favorite. The best chain style for daily wear, and a gorgeous slinky base for layering your favorite medium charms and pendants. This chain is best for large zodiac charms and any charm over 12mm in width. Available in 18k yellow and 14k white gold.","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/1_6mm-cable-chain-necklace_1_6mm-cable-chain-necklace_valley_rose.jpg?v=1715697964"],"price":2785,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:31.973Z"},"share_url":"https://firestarter.network/l/lst_CjI1yx2O","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_CjI1yx2O' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Medium Cable Chain 18\" Necklace 1.7mm in 18k Yellow and White Gold' and a budget_max comfortably above $2785.00 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."]}}