{"type":"firestarter.listing","listing":{"id":"lst_7pA5Kf36","product_name":"3.79ct Cushion Natural Sapphire (Colour Green, Clarity Eye Clean, Cut Faceted)","category":"gemstone","description":"\n    Type: Natural\nVariety: Sapphire\nShape: Cushion\nCarat: 3.79\nColour: Green\nClarity: Eye Clean\nCut: Faceted\nTreatment: Diffusion\nOrigin: Thailand\nMeasurements: 8.8x8.7x5.4mm\nCertificate: Uncertified\n  ","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/3.79ct_Cushion_Natural_Sapphire_Colour_Green_Clarity_Eye_Clean_Cut_Faceted.webp?v=1774853683"],"price":4959,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:31.357Z"},"share_url":"https://firestarter.network/l/lst_7pA5Kf36","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_7pA5Kf36' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 3.79ct Cushion Natural Sapphire (Colour Green, Clarity Eye Clean, Cut Faceted)' and a budget_max comfortably above $4959.00 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."]}}