{"type":"firestarter.listing","listing":{"id":"lst_k6SRrbla","product_name":"Fountain Pen Ink - 21 Ivy","category":"Ink","description":"The finest British-made fountain pen ink suitable for all pens. \nInspired by the lush greenery quintessential to English gardens, this rich green ink embodies the timeless beauty of ivy-covered walls. Perfect for nature lovers and those who appreciate the deep, earthy tones of the forest. Oh, and did we mention that it's a perfect match for our Ivy pens?!\n\nTransform the way you create with an ink colour that sets you apart!\n\nMost pens offer ink cartridges in a limited selection of colours. I want to change that by bringing you this range of beautifully rich and distinctive inks – with no need to dispose of or replace an empty cartridge.\nThese wonderfully free-flowing inks come in a number of beautiful and nuanced shades. They truly are a joy to write or create with!","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/fountain-pen-ink-ivy-packaging-bottle-swatch.jpg?v=1745323382"],"price":19,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.064Z"},"share_url":"https://firestarter.network/l/lst_k6SRrbla","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_k6SRrbla' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Fountain Pen Ink - 21 Ivy' and a budget_max comfortably above $19.00 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."]}}