{"type":"firestarter.listing","listing":{"id":"lst_rNnoppN6","product_name":"Nahvalur Original Fall Fountain Pen","category":"Fountain Pen","description":"\nOur next fall pen stays with the trend of warm and cozy feelings.\nThe Original: Fall is still a demonstrator like it’s other seasonal cousins. But this time has been adorned with a warm, coffee-like brown piston, furniture and nib. While this pen does not replace your daily caffeine intake, it may help alleviate some of the sting of working on a chilly fall morning.\n\n\nNahvalur Original Fall Fountain Pen Specifications:\nFinish: Clear, Transparent Resin\nTrims and Clip: Brown\nNib: No. 6 stainless steel\nFilling System: Piston mechanism (bottled ink fill only)\nPen Length, closed: 5.77 in. / 146.5 mm\nPen Length, open, cap off: 5.24 in. / 133 mm\nPen Length, open, cap posted: 6.92 in. / 176mm\nPen Diameter, barrel: 0.53 in. / 13.5mm\nPen Diameter, section: 0.39 in. - 0.43 in. / 10mm - 11 mm\nPen Total Weight: 0.7oz. / 19.8 g\nGift boxed with user guide, 1-year warranty, and metal piston wrench.\n","images":["https://cdn.shopify.com/s/files/1/0575/7177/files/Nahvalur-Original-Fall-Fountain-Pen_bbf020db.jpg?v=1767106660","https://cdn.shopify.com/s/files/1/0575/7177/files/Nahvalur-Original-Fall-Fountain-Pen-2_a59a14cf.jpg?v=1767107194","https://cdn.shopify.com/s/files/1/0575/7177/files/Nahvalur-Original-Fall-Fountain-Pen-3_12b3d6c4.jpg?v=1767107196","https://cdn.shopify.com/s/files/1/0575/7177/files/Nahvalur-Original-Fall-Fountain-Pen-4_857d32f1.jpg?v=1767107197","https://cdn.shopify.com/s/files/1/0575/7177/files/Nahvalur-Original-Fall-Fountain-Pen-5_c2e7c4f4.jpg?v=1767107201","https://cdn.shopify.com/s/files/1/0575/7177/files/Nahvalur-Original-Fall-Fountain-Pen-6_810e7674.jpg?v=1767106725","https://cdn.shopify.com/s/files/1/0575/7177/files/Nahvalur-Original-Fall-Fountain-Pen-7_9fe4acde.jpg?v=1767106737","https://cdn.shopify.com/s/files/1/0575/7177/files/Nahvalur-Original-Fall-Fountain-Pen-8.jpg?v=1767106738"],"price":65,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:59.196Z"},"share_url":"https://firestarter.network/l/lst_rNnoppN6","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_rNnoppN6' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Nahvalur Original Fall Fountain Pen' and a budget_max comfortably above $65.00 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."]}}