{"type":"firestarter.listing","listing":{"id":"lst_I4IofTUK","product_name":"Mini Fountain Pen Ink - 03 Neptune","category":"Ink","description":"The finest British-made fountain pen ink – now in a mini 5ml sample bottle!\nBeing just minutes from the beautiful Dorset coastline, this ocean-blue ink is sure to remind you of home. For lovers of the sun, sea, and sand, enjoy – Neptune’s vast oceans in a bottle.\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.\n","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/mini-fountain-pen-ink-neptune-packaging-bottle.jpg?v=1739535684","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/mini-fountain-pen-ink-strawberry-jam-pipette.jpg?v=1761596247","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/mini-fountain-pen-ink-packaging.jpg?v=1761596247"],"price":7.5,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.413Z"},"share_url":"https://firestarter.network/l/lst_I4IofTUK","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_I4IofTUK' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Mini Fountain Pen Ink - 03 Neptune' and a budget_max comfortably above $7.50 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."]}}