{"type":"firestarter.listing","listing":{"id":"lst_1wS_3VzP","product_name":"Mustard Powder","category":"Spices","description":"\nThe product of ground yellow mustard seeds, mustard powder can be used to add tang to dry rubs or zesty sauces and salad dressings. Add water to make your own fresh hot mustard on the spot.\n","images":["https://cdn.shopify.com/s/files/1/0604/1077/products/Ylw_Mustard_Flour-Square-0624.jpg?v=1510206926"],"price":6.75,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:10.987Z"},"share_url":"https://firestarter.network/l/lst_1wS_3VzP","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_1wS_3VzP' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Mustard Powder' and a budget_max comfortably above $6.75 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."]}}