{"type":"firestarter.listing","listing":{"id":"lst_j6jHGUV1","product_name":"1.00ct Marquise Natural Diamond (Colour E, Clarity IF, GIA Certified)","category":"diamond","description":"\n    Type: Natural Diamond\nShape: Marquise\nCarat: 1.00\nColour: E\nClarity: IF\nPolish: Excellent\nSymmetry: Very Good\nFluorescence: Medium\nMeasurements: 10.13x5.07x3.32mm\nL/W Ratio: 2\nTable: 58%\nDepth: 65.6%\nCertificate: GIA\nCertificate Number: 2537683768\nCertificate PDF: View\n\n  ","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/1.00ct_Marquise_Natural_Diamond_Colour_E_Clarity_IF_GIA_Certified.webp?v=1782887659"],"price":4490,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-07-03T11:45:32.780Z"},"share_url":"https://firestarter.network/l/lst_j6jHGUV1","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_j6jHGUV1' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 1.00ct Marquise Natural Diamond (Colour E, Clarity IF, GIA Certified)' and a budget_max comfortably above $4490.00 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."]}}