{"type":"firestarter.listing","listing":{"id":"lst_ouQ0bCsc","product_name":"4.02ct Marquise Natural Sapphire (Colour Blue, Clarity Eye Clean, Cut Faceted)","category":"gemstone","description":"\n    Type: Natural\nVariety: Sapphire\nShape: Marquise\nCarat: 4.02\nColour: Blue\nClarity: Eye Clean\nCut: Faceted\nTreatment: Heated\nOrigin: Srilanka\nMeasurements: 14.91x6.84x4.68mm\nCertificate: GIA\nCertificate Number: 2225594656\nCertificate PDF: View\n\n  ","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/4.02ct_Marquise_Natural_Sapphire_Colour_Blue_Clarity_Eye_Clean_Cut_Faceted.webp?v=1781792495"],"price":15408,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:29.498Z"},"share_url":"https://firestarter.network/l/lst_ouQ0bCsc","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_ouQ0bCsc' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 4.02ct Marquise Natural Sapphire (Colour Blue, Clarity Eye Clean, Cut Faceted)' and a budget_max comfortably above $15408.00 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."]}}