{"type":"firestarter.listing","listing":{"id":"lst_xpr5v_Ca","product_name":"Nahvalur (Narwhal) Nautilus Bronze Corydoras Ebonite Fountain Pen","category":"Fountain Pen","description":"Vintage Materials Meet Modern Design\n\n\nProduct\nNahvalur Nautilus Bronze Corydoras Fountain Pen - (Redesigned in April 2025)\nDescription\nIntroduced in the fall of 2021, the Nahvalur Nautilus series beautifully combines vintage materials with contemporary designs. Inspired by the origins of fountain pen manufacturing, the Nautilus series revives the use of ebonite—a classic hardened rubber material once used in the creation of early fountain pens. This retro material is paired with modern design elements, including three elegantly crafted portholes on the pen body that allow you to view the ink reserve, blending functionality with timeless aesthetics.\nSpecs\n\n\n\n\n\nCondition\nNew\n\n\nBrand\nNahvalur\n\n\nType\nFountain Pens\n\n\nColor\nBronze Corydoras\n\n\nBody Material\nEbonite\n\n\nTrim\nRetro Brass\n\n\nFilling Mechanism\nPiston Filler\n\n\nNib Options\nStainless Steel #6 Nibs\n\n\nPostable\nNo\n\n\n\n\n\n\n\n\nLength - Closed\n5.9 in. / 149mm\n\n\nLength - Open\n5.24 in. / 133mm\n\n\nBarrel Diameter\n0.51 in. / 13mm\n\n\nGrip Diameter\n0.39 in. - 0.45 in. / 10mm - 11.5mm\n\n\nWeight\n1.3 oz. / 36.85g\n\n\nPackaged in\nGift Box\n\n\n\n\n\nFeatures\n\nClassic ebonite material with a retro brass trim\nThree portholes for viewing the ink reserve\nPiston-filling mechanism for bottled inks\nAvailable with stainless steel \n\nPackaging\nComes in a beautifully craft box.\nAbout Nahvalur Pens\nThe team at Nahvalur debuted their stunning range of fountain pens at the 2019 DC Pen Show. Captivating with their artistry and design, Nahvalur pens quickly became a favorite. Everything is made in-house, from their fine self-made nibs to their high-quality piston fillers, ensuring a superior writing experience. Nahvalur pens offer larger ink capacities so you never run out of ink when it matters most.","images":["https://cdn.shopify.com/s/files/1/0575/7177/files/photo-output_011_dd5b3e55-3ed5-4ddd-ac80-4290b2869e99.jpg?v=1755520981","https://cdn.shopify.com/s/files/1/0575/7177/files/photo-output_2_894cfe19-01ba-4c0a-aeb1-c330b1cd68e1.jpg?v=1755520981","https://cdn.shopify.com/s/files/1/0575/7177/files/photo-output_4_d4f616fb-b236-439e-80b8-eb9d6e5e5244.jpg?v=1755520981","https://cdn.shopify.com/s/files/1/0575/7177/files/photo-output_5.jpg?v=1755520981","https://cdn.shopify.com/s/files/1/0575/7177/files/photo-output_6.jpg?v=1755520981","https://cdn.shopify.com/s/files/1/0575/7177/files/photo-output_29_962dcdee-3e71-46ab-ade5-c17c10c0611e.jpg?v=1755520981","https://cdn.shopify.com/s/files/1/0575/7177/files/photo-output_113.jpg?v=1755520981","https://cdn.shopify.com/s/files/1/0575/7177/files/photo-output_012.jpg?v=1755520981","https://cdn.shopify.com/s/files/1/0575/7177/files/photo-output_39_43dee54f-1f1d-4f83-83bc-807e4ad5cec4.jpg?v=1755520981","https://cdn.shopify.com/s/files/1/0575/7177/files/photo-output_112_f59ef33a-f938-4397-8350-48e309d65648.jpg?v=1755520981"],"price":140,"currency":"USD","in_stock":true,"inventory_qty":49995,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:01.465Z"},"share_url":"https://firestarter.network/l/lst_xpr5v_Ca","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_xpr5v_Ca' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Nahvalur (Narwhal) Nautilus Bronze Corydoras Ebonite Fountain Pen' and a budget_max comfortably above $140.00 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."]}}