{"type":"firestarter.listing","listing":{"id":"lst_0VuW_zIn","product_name":"1.12ct Round Lab Grown Diamond (Colour Fancy Deep Brown, Clarity SI2, Cut EX, IGI Certified)","category":"diamond","description":"\n    Type: Lab Grown Diamond\nShape: Round\nCarat: 1.12\nColour: Brown\nIntensity: Fancy Deep\nClarity: SI2\nCut: Excellent\nPolish: Very Good\nSymmetry: Very Good\nFluorescence: None\nMeasurements: 6.55x6.56x4.14mm\nL/W Ratio: 1\nTable: 57%\nDepth: 63.2%\nCertificate: IGI\nCertificate Number: LG788675893\nCertificate PDF: View\n\n  ","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/1.12ct_Round_Lab_Grown_Diamond_Colour_Fancy_Deep_Brown_Clarity_SI2_Cut_EX_IGI_Certified.webp?v=1776698222"],"price":1013,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:30.836Z"},"share_url":"https://firestarter.network/l/lst_0VuW_zIn","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_0VuW_zIn' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 1.12ct Round Lab Grown Diamond (Colour Fancy Deep Brown, Clarity SI2, Cut EX, IGI Certified)' and a budget_max comfortably above $1013.00 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."]}}