{"type":"firestarter.listing","listing":{"id":"lst_S3ROl8MK","product_name":"1.46ct Marquise Lab Grown Diamond (Colour E, Clarity SI1, IGI Certified)","category":"diamond","description":"\n    Type: Lab Grown Diamond\nShape: Marquise\nCarat: 1.46\nColour: E\nClarity: SI1\nPolish: Excellent\nSymmetry: Excellent\nFluorescence: None\nMeasurements: 11.99x6.05x3.6mm\nL/W Ratio: 1.98\nTable: 60%\nDepth: 59.5%\nCertificate: IGI\nCertificate Number: LG745518576\nCertificate PDF: View\n\n  ","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/1.46ct_Marquise_Lab_Grown_Diamond_Colour_E_Clarity_SI1_IGI_Certified.webp?v=1783657661"],"price":756,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-07-10T12:14:23.304Z"},"share_url":"https://firestarter.network/l/lst_S3ROl8MK","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_S3ROl8MK' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 1.46ct Marquise Lab Grown Diamond (Colour E, Clarity SI1, IGI Certified)' and a budget_max comfortably above $756.00 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."]}}