{"type":"firestarter.listing","listing":{"id":"lst_525jiDhq","product_name":"Cursive Italic Fountain Pen Nib","category":"Fountain pens","description":"Elegant line variations with a double broad tip. Looking to add flair to your handwriting? The Cursive Italic nib is specially designed to create stunning line variations, making every stroke unique. This italic nib features a smooth, rounded tip with slightly flattened sides, offering two distinct writing surfaces: a broader downstroke (approx 1mm) and a fine horizontal stroke (as thin as 0.2mm).\nThe \"cursive\" in its name reflects the flowing, elegant script it produces, while the \"BB\" designation stands for \"double broad,\" meaning the nib creates lines twice as wide as a standard broad nib.\nMade exclusively for our fountain pens, all nibs are tipped with hard-wearing iridium for effortlessly smooth writing and are plated in 14k gold for a classic, elegant finish. Plus, every nib is interchangeable, allowing you to effortlessly switch styles whenever inspiration strikes.","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/fountain-pen-nib-cursive-italic-b.png?v=1772120449"],"price":26,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.496Z"},"share_url":"https://firestarter.network/l/lst_525jiDhq","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_525jiDhq' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Cursive Italic Fountain Pen Nib' and a budget_max comfortably above $26.00 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."]}}