{"type":"firestarter.listing","listing":{"id":"lst_jzeUmPSk","product_name":"1.39ct Round Natural Sapphire (Colour Green, Clarity Eye Clean, Cut Faceted)","category":"gemstone","description":"\n    Type: Natural\nVariety: Sapphire\nShape: Round\nCarat: 1.39\nColour: Green\nClarity: Eye Clean\nCut: Faceted\nTreatment: None\nOrigin: Madagascar\nMeasurements: 6.41x6.35x4.65mm\nCertificate: Uncertified\n  ","images":["https://cdn.shopify.com/s/files/1/1994/1391/files/1.39ct_Round_Natural_Sapphire_Colour_Green_Clarity_Eye_Clean_Cut_Faceted.webp?v=1783464820"],"price":1449,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-07-07T23:45:50.156Z"},"share_url":"https://firestarter.network/l/lst_jzeUmPSk","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_jzeUmPSk' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 1.39ct Round Natural Sapphire (Colour Green, Clarity Eye Clean, Cut Faceted)' and a budget_max comfortably above $1449.00 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."]}}