{"type":"firestarter.listing","listing":{"id":"lst_sDECITmI","product_name":"3.00ct Marquise Natural Diamond (Colour F, Clarity IF, GIA Certified)","category":"diamond","description":"\n    Type: Natural Diamond\nShape: Marquise\nCarat: 3.00\nColour: F\nClarity: IF\nPolish: Very Good\nSymmetry: Good\nFluorescence: None\nMeasurements: 15.05x6.99x4.39mm\nL/W Ratio: 2.15\nTable: 63%\nDepth: 62.8%\nCertificate: GIA\nCertificate Number: 15879220\nCertificate PDF: View\n\n  ","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/3.00ct_Marquise_Natural_Diamond_Colour_F_Clarity_IF_GIA_Certified.webp?v=1780422813"],"price":73198,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:29.886Z"},"share_url":"https://firestarter.network/l/lst_sDECITmI","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_sDECITmI' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 3.00ct Marquise Natural Diamond (Colour F, Clarity IF, GIA Certified)' and a budget_max comfortably above $73198.00 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."]}}