{"type":"firestarter.listing","listing":{"id":"lst_vZQ-YCH8","product_name":"Mini Fountain Pen Ink - 05 Cassis","category":"Ink","description":"The finest British-made fountain pen ink – now in a mini 5ml sample bottle!\nWhile it won’t taste as good as blackcurrant liqueur (and we certainly wouldn't recommend having a sip), hopefully this beautiful shade of deep red looks just as delicious as the real thing.\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-cassis-packaging-bottle.jpg?v=1739534617","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":"2026-06-18T20:47:23.399Z"},"share_url":"https://firestarter.network/l/lst_vZQ-YCH8","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_vZQ-YCH8' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Mini Fountain Pen Ink - 05 Cassis' 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."]}}