{"type":"firestarter.listing","listing":{"id":"lst_XnxMwBW4","product_name":"1.71ct Marquise Natural Diamond (Colour L, Clarity VVS1, Cut EX, GIA Certified)","category":"diamond","description":"\n    Type: Natural Diamond\nShape: Marquise\nCarat: 1.71\nColour: L\nClarity: VVS1\nCut: Excellent\nPolish: Excellent\nSymmetry: Excellent\nFluorescence: Strong\nMeasurements: 12.21x6.11x3.62mm\nL/W Ratio: 2\nTable: 61%\nDepth: 59.3%\nCertificate: GIA\nCertificate Number: 5543807558\nCertificate PDF: View\n\n  ","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/1.71ct_Marquise_Natural_Diamond_Colour_L_Clarity_VVS1_Cut_EX_GIA_Certified.webp?v=1782976909"],"price":6177,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-07-03T11:45:32.752Z"},"share_url":"https://firestarter.network/l/lst_XnxMwBW4","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_XnxMwBW4' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 1.71ct Marquise Natural Diamond (Colour L, Clarity VVS1, Cut EX, GIA Certified)' and a budget_max comfortably above $6177.00 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."]}}