{"type":"firestarter.listing","listing":{"id":"lst_CjZJcyNC","product_name":"Model 46 Cor FP Black Cathedral","category":"Fountain Pen - Model 46","description":"** Winner of the 2025 PWI Reader's Choice Awards in the Fine Art Category. \n\n♦ This is the newly designed version of the Model 46 fountain pen, starting with the Black Cathedral flagship coloration. We've added thin finials on each end, changed the top taper to a taper / bevel hybrid, and added four rings on the barrel. We've also removed the wrap engraving and just added the number on the bottom finial. The F and diamonds logo remains on top.  ♦ Block threads on the end of the grip for comfort. Precision posting of the cap with firm grip.♦ Lightweight at .74 oz or 21 grams (with nib and converter un-inked)♦ #6 Size fountain pen nib - with many tip options in factory or custom ground.♦ Cartridge - piston converter - eye dropper filling options. Barrel holds approximately 3.1ml of ink when eyedroppered.♦ Made in USA.\n\n\n\n\n\n ♦ Dimensions:.531\" cap diameter.500\" upper barrel diameter .438\" lower barrel diameter5.25\" capped length6.50\" cap posted length (including nib)5.00\" barrel length (including nib).410\" grip section at thinnest point\n\n\n♦ Lifetime warranty♦ 30 day return policy.♦ Shipped with a Franklin-Christoph single pen zippered pouch with an outer white thin box.  \n","images":["https://cdn.shopify.com/s/files/1/0023/7679/4187/files/46BlackCathedralFountainPensilver.jpg?v=1755801825","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/46BlackCathedralcappedongrey.jpg?v=1755801825","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/46BlackCathedralFPblacknib.jpg?v=1730224214","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/46BlackCathedralposted.jpg?v=1730224699","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/46BlackCathedralfinials.jpg?v=1730224219","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/New46BlackCathedralcropped.jpg?v=1730224226","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/46BlackCathedralonCanvas.jpg?v=1730224712","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/FPorderinclusions_475ce94e-1ccf-4dde-8494-b14be58a27ab.jpg?v=1741899559"],"price":160,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:20.187Z"},"share_url":"https://firestarter.network/l/lst_CjZJcyNC","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_CjZJcyNC' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Model 46 Cor FP Black Cathedral' and a budget_max comfortably above $160.00 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."]}}