{"type":"firestarter.listing","listing":{"id":"lst_QHZYwg8u","product_name":"Garden Cress","category":"Vegetables","description":"Garden cress is similar to watercress, but is more potently flavored. It's truly peppery; compared to arugula, it has more tang and less body. It really livens the palate, even when it's used sparingly on salads and sandwiches. Easy and fast-growing; it bolts quite quickly so, if you enjoy it, plan succession sowings.","images":["https://cdn.shopify.com/s/files/1/0072/0909/1117/products/Garden-Cress-vendor-unknown-1630675675.jpg?v=1735580424","https://cdn.shopify.com/s/files/1/0072/0909/1117/products/Garden-Cress-vendor-unknown-1630675679.jpg?v=1735580425"],"price":4.39,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:39.794Z"},"share_url":"https://firestarter.network/l/lst_QHZYwg8u","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_QHZYwg8u' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Garden Cress' 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."]}}