{"type":"firestarter.listing","listing":{"id":"lst_I-snYekv","product_name":"Nahvalur Original Spring Fountain Pen","category":"Fountain Pen","description":" A Splash of Spring’s Color   The Nahvalur Original Spring offers a captivating view of its piston-filling mechanism in action, allowing the writer to witness the graceful movement and the ink swirling within the crystal-clear barrel reservoir. Enhanced by a transparent resin body, this pen exudes elegance, complemented by an art deco chrome clip and an engraved barrel band. Experience a heightened level of refined sophistication as the piston effortlessly glides, creating a mesmerizing display of ink dynamics within the reservoir. The Original: Spring is a visual ode to the season that echos the fresh hues of springtime. The green color-plated trim adds a touch of sophistication, making the Original: Spring a statement piece for the season of rejuvenation.Quality Meets AffordabilityTrue to the Nahvalur tradition, the Original: Spring comes with our in-house stainless steel nibs, available in fine, medium, broad, and stub sizes. Known for their smoothness, these nibs promise a writing experience that's as flawless as the flow of a serene spring brook.Nahvalur Original Green Fountain Pen Specifications:\nFinish: Clear, Transparent Resin\nTrims and Clip: Green\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-Spring-Fountain-Pen_16acea20.jpg?v=1767106930","https://cdn.shopify.com/s/files/1/0575/7177/files/Nahvalur-Original-Spring-Fountain-Pen-2_5c9edcd9.jpg?v=1767107073","https://cdn.shopify.com/s/files/1/0575/7177/files/Nahvalur-Original-Spring-Fountain-Pen-3.jpg?v=1767107221","https://cdn.shopify.com/s/files/1/0575/7177/files/Nahvalur-Original-Spring-Fountain-Pen-4.jpg?v=1767107225"],"price":65,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:59.198Z"},"share_url":"https://firestarter.network/l/lst_I-snYekv","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_I-snYekv' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Nahvalur Original Spring 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."]}}