{"type":"firestarter.listing","listing":{"id":"lst_4V-kytjs","product_name":"Marvel of Four Seasons Butterhead Lettuce Seeds","category":"Seeds & Plants","description":"Both tasty and attractive, this 1800s French heirloom also known as Merveille de Quatre Saisons has tender, sweet leaves that are green at the base, turning to a beautiful cranberry-red, and forming a crinkly rosette that almost looks like a flower! If kept moist, it won't turn bitter when heat arrives. Rosettes are 8\"–12\" in diameter, good for large containers.","images":["https://cdn.shopify.com/s/files/1/0658/5693/0045/files/3058i_Lettuce-Butter-Marvel-ORG_3lxq43_3a182df5-41d4-438a-81d7-d0764708ef53.jpg?v=1770279771","https://cdn.shopify.com/s/files/1/0658/5693/0045/files/3058si_Lettuce-Butter-Marvel-ORG_c331f293-e26d-4d66-b164-f07f480b9573.jpg?v=1770279771","https://cdn.shopify.com/s/files/1/0658/5693/0045/files/3058w_Lettuce-Butter-Marvel-ORG_ehsnei_1ff954fe-e650-42bc-9fb4-eeceedd0c178.jpg?v=1770279771","https://cdn.shopify.com/s/files/1/0658/5693/0045/files/362_2674_large_fad7b0a8-6bda-461f-bad6-4924898f15fd.jpg?v=1770279771"],"price":3.49,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:02.606Z"},"share_url":"https://firestarter.network/l/lst_4V-kytjs","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 ","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_4V-kytjs' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Marvel of Four Seasons Butterhead Lettuce Seeds' and a budget_max comfortably above $3.49 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."]}}