{"type":"firestarter.listing","listing":{"id":"lst_COcZ9qvg","product_name":"Wren - Spare Ink Reservoirs","category":"Wren","description":"Spare ink reservoirs for your Wren pen. These high-quality fibre core reservoirs are designed to provide smooth and reliable ink flow, ensuring a seamless writing experience.\nDetails:\n\nPack of 5\nSize: 6mm x 42mm\n\n","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/products/Ink_Reservoir_Wren_LS_SQ.jpg?v=1772122699","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/Wren_Reservoirs.jpg?v=1782215560"],"price":3,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.269Z"},"share_url":"https://firestarter.network/l/lst_COcZ9qvg","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_COcZ9qvg' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Wren - Spare Ink Reservoirs' and a budget_max comfortably above $3.00 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."]}}