{"type":"firestarter.listing","listing":{"id":"lst_uUxlg9mC","product_name":"0.85ct Marquise Lab Grown Diamond (Colour Fancy Light Yellow, Clarity VS1, Cut GD, IGI Certified)","category":"diamond","description":"\n    Type: Lab Grown Diamond\nShape: Marquise\nCarat: 0.85\nColour: Yellow\nIntensity: Fancy Light\nClarity: VS1\nCut: Good\nPolish: Good\nSymmetry: Good\nFluorescence: None\nMeasurements: 9.63x4.43x2.87mm\nL/W Ratio: 2.17\nTable: 58%\nDepth: 64.8%\nCertificate: IGI\nCertificate Number: LG651444256\nCertificate PDF: View\n\n  ","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/0.85ct_Marquise_Lab_Grown_Diamond_Colour_Fancy_Light_Yellow_Clarity_VS1_Cut_GD_IGI_Certified.webp?v=1779231869"],"price":724,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:30.208Z"},"share_url":"https://firestarter.network/l/lst_uUxlg9mC","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_uUxlg9mC' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 0.85ct Marquise Lab Grown Diamond (Colour Fancy Light Yellow, Clarity VS1, Cut GD, IGI Certified)' and a budget_max comfortably above $724.00 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."]}}