{"type":"firestarter.listing","listing":{"id":"lst_QUKTatEo","product_name":"1.42ct Marquise Lab Grown Diamond (Colour Fancy Vivid Green, Clarity VS1, Cut VG, Uncertified)","category":"diamond","description":"\n    Type: Lab Grown Diamond\nShape: Marquise\nCarat: 1.42\nColour: Green\nIntensity: Fancy Vivid\nClarity: VS1\nCut: Very Good\nPolish: Excellent\nSymmetry: Very Good\nFluorescence: None\nMeasurements: 11.65x5.62x3.38mm\nL/W Ratio: 2.07\nTable: 63%\nDepth: 60.1%\nCertificate: Uncertified\nCertificate Number: E2D1A3679A\n  ","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/1.42ct_Marquise_Lab_Grown_Diamond_Colour_Fancy_Vivid_Green_Clarity_VS1_Cut_VG_Uncertified.webp?v=1783440000"],"price":884,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-07-07T23:45:50.269Z"},"share_url":"https://firestarter.network/l/lst_QUKTatEo","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_QUKTatEo' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 1.42ct Marquise Lab Grown Diamond (Colour Fancy Vivid Green, Clarity VS1, Cut VG, Uncertified)' and a budget_max comfortably above $884.00 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."]}}