{"type":"firestarter.listing","listing":{"id":"lst_HGvid8EL","product_name":"Pick 'n' Mix Fountain Pen Inks","category":"Bundle","description":"Choose 3 bottles of Tom's Studio Fountain Pen Ink and save 20%.\nGood to Know: \n\nFor use in Fountain Pens, The Lumos and all dip pens.\nBecause the ink has such a concentrated colour you can even dilute it with a smidge of water (ideally distilled) to create watercolour like washes and depth of colour.\nEach bottle holds 50ml of this lovely ink, enough to keep you going for reams of writing, drawing or doodling.\nAll of our inks are water-based, acid-free, non-toxic, and are vegan-friendly.\nEach Ink comes beautifully presented in a stunning bottle and antique laid paper, gold-foiled label.\n","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/toms-studio-fountain-pen-inks.jpg?v=1732795146"],"price":46,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.746Z"},"share_url":"https://firestarter.network/l/lst_HGvid8EL","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_HGvid8EL' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Pick 'n' Mix Fountain Pen Inks' and a budget_max comfortably above $46.00 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."]}}