{"type":"firestarter.listing","listing":{"id":"lst_74BSG035","product_name":"Ithaca Lettuce","category":"Vegetables","description":"Open-pollinated, ball-head iceberg-type lettuce with good heat resistance, developed at Cornell University. Excellent yields of medium dark green leaves.","images":["https://cdn.shopify.com/s/files/1/0072/0909/1117/products/Ithaca-Lettuce-vendor-unknown-1630675801.jpg?v=1735580399","https://cdn.shopify.com/s/files/1/0072/0909/1117/products/Ithaca-Lettuce-vendor-unknown-1630675805.jpg?v=1735580399"],"price":4.39,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:39.724Z"},"share_url":"https://firestarter.network/l/lst_74BSG035","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_74BSG035' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Ithaca Lettuce' and a budget_max comfortably above $4.39 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."]}}