{"type":"firestarter.listing","listing":{"id":"lst_-I9vBEQc","product_name":"Ailsa Craig Onion","category":"Vegetables","description":"If you are in the market for a massive long day sweet onion, this heavyweight champ will knock your socks off. David Murray, gardener for the Marquis of Ailsa, introduced this stunner in 1887 at Culzean Castle in Scotland. Sow early in fertile soil for quick-growing, pale yellow onions that can reach up to 6 lbs! Globe shaped. Enjoy them fresh or cooked for their mild, sweet flavor. Harvest as needed; this is not a storage onion.","images":["https://cdn.shopify.com/s/files/1/0072/0909/1117/products/Ailsa-Craig-Onion-vendor-unknown-1630682695.jpg?v=1735578917","https://cdn.shopify.com/s/files/1/0072/0909/1117/products/Ailsa-Craig-Onion-vendor-unknown-1630682699.jpg?v=1735578917","https://cdn.shopify.com/s/files/1/0072/0909/1117/products/Ailsa-Craig-Onion-vendor-unknown-1630682702.jpg?v=1735578918"],"price":4.99,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:37.705Z"},"share_url":"https://firestarter.network/l/lst_-I9vBEQc","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_-I9vBEQc' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Ailsa Craig Onion' and a budget_max comfortably above $4.99 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."]}}