{"type":"firestarter.listing","listing":{"id":"lst_tn5ujwvN","product_name":"1.50ct Oval Lab Grown Diamond (Colour Fancy Vivid Green, Clarity VS1, Uncertified)","category":"diamond","description":"\n    Type: Lab Grown Diamond\nShape: Oval\nCarat: 1.50\nColour: Green\nIntensity: Fancy Vivid\nClarity: VS1\nPolish: Excellent\nSymmetry: Excellent\nFluorescence: None\nMeasurements: 8.91x6.34x4.09mm\nL/W Ratio: 1.41\nTable: 56%\nDepth: 61%\nCertificate: Uncertified\nCertificate Number: 09BCFA39CF\n  ","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/1.50ct_Oval_Lab_Grown_Diamond_Colour_Fancy_Vivid_Green_Clarity_VS1_Uncertified.webp?v=1783439861"],"price":837,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-07-07T23:45:50.311Z"},"share_url":"https://firestarter.network/l/lst_tn5ujwvN","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_tn5ujwvN' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 1.50ct Oval Lab Grown Diamond (Colour Fancy Vivid Green, Clarity VS1, Uncertified)' and a budget_max comfortably above $837.00 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."]}}