{"type":"firestarter.listing","listing":{"id":"lst_iaypZ8jE","product_name":"Mustard, Yellow","category":"Pure Spices A-Z","description":"Hailing from the same family as cabbage and kale, mustard plants have a long and stalwart culinary history in all forms: leaf, root, and seed. While all parts are delicious, we are really here for the sweet and spicy seeds! Yellow mustard seeds are milder and sweeter than the brown variety, and are well suited to European culinary applications where the variety has been used for centuries to add zip to pickles, relishes, and brines. And of course homemade mustard!","images":["https://cdn.shopify.com/s/files/1/0548/7922/3970/files/pure-mustard-yellow-seamless_d45a8154-3c51-4d52-850b-c78467b42892.jpg?v=1708611701","https://cdn.shopify.com/s/files/1/0548/7922/3970/products/curio-pure-mustard-yellow-topdown.jpg?v=1708611701"],"price":5,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:09.997Z"},"share_url":"https://firestarter.network/l/lst_iaypZ8jE","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_iaypZ8jE' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Mustard, Yellow' and a budget_max comfortably above $5.00 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."]}}