{"type":"firestarter.listing","listing":{"id":"lst_on0omSUK","product_name":"Model 19 Fountain Pen - Black Cathedral","category":"Fountain Pen - Model 19","description":"\n\n\n\n\n This is  our latest flagship look, in Black Cathedral. The classic black pairs well with the cathedral acrylic which features a stained glass look in rich colors of dark and light blues, reds, greens, and yellows. Note that each Cathedral band will have varying color combinations. \n\n\n\n\n\n♦ Nicknamed the \"1901\" commemorating the year the original company was founded.\n\n♦ Dimensions:5.50\" capped6.62\" posted.67\" cap diameter.61\" barrel diameter5.1\" from nib tip to barrel end.425\" smallest grip section diameter.50\" grip section at thickest point1.62\" clip lengthWeight without ink = .9oz / 25.5g ♦ #6 Size nib - with many tip options in factory or custom ground. ♦ Beveled ends demonstrate the thick acrylic cut from a solid bar of methacrylate. Built to be durable, and guaranteed for life. ♦  Shipped with the Franklin-Christoph single pen zippered pouch (material varies) with an outer white thin box. \n\n \n♦ Durable flex clip, plated in rhodium, with four diamond motif  engraved.♦ Cartridge/Converter filled Fountain Pen (Int'l Std). ♦ 30 Day Return Policy - Lifetime Warranty.   ♦ Made in USA.\n","images":["https://cdn.shopify.com/s/files/1/0023/7679/4187/files/19BlackCathedralFountainPennewsect_f8941b3a-cc4a-451c-8ba9-4da02a9c43be.jpg?v=1753384232","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/19BlackCathedralside_7ed28741-86c3-408b-a6f1-cb733bb4fe61.jpg?v=1753384232","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/19Sectionw_Ravennib_15a4d1a1-d4a9-44a3-9245-aab284014e52.jpg?v=1753384159","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/FPorderinclusions_bbdaec01-3d8a-4efd-91fc-3021540a0566.jpg?v=1753384159"],"price":235,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:20.568Z"},"share_url":"https://firestarter.network/l/lst_on0omSUK","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_on0omSUK' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Model 19 Fountain Pen - Black Cathedral' and a budget_max comfortably above $235.00 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."]}}