{"type":"firestarter.listing","listing":{"id":"lst_bH5jY-6s","product_name":"Ti Ultra Pen","category":"Pens","description":" \nCreate your perfect writing experience\n\nThe unique 3-in-1 design provides freedom for you to explore, experiment, and has the flexibility to transform from a fountain pen, ballpoint pen, or rollerball pen in seconds. No hacks, no spacers, no complicated setup...it simply works with virtually any refill/ink you can toss inside to provide the most customizable and flexible writing experience we've designed yet.\n\nWe are known for making pens are compatible with more refills than any other brand, it's kind of our thing. With so many great refills on the market, we don't see the point in locking you into using only one if we can engineer a way for them all to fit perfectly inside without any hacks, modifications, or spacers.\n\nSo, that's exactly what we did...we spent the time and effort to make it possible for over 750+ refills from major manufactures all fit like they were custom designed to be the star.\n\nCLICK TO SEE THE COMPATIBLE REFILL LIST\n\nAll About The Ink\n\nArguably, what ink or refill you have inside your pen plays a huge factor in providing a pleasant writing experience for you. There seems to be an endless sea of options on the market and being able to experiment and find your perfect setup or switch back and forth as needed has never been easier.\n\nUSA & INTL Patents-Pending \n \nVideo Reviews\n \nVideo Instructions\n \nGrade 5 Titanium","images":["https://cdn.shopify.com/s/files/1/1353/1287/products/ti-ultra-titanium-fountain-pen-matte-finish-minimalist.jpg?v=1768857249","https://cdn.shopify.com/s/files/1/1353/1287/products/ti-ultra-titanium-fountain-pen-nib-and-cap-closeup.jpg?v=1768856658","https://cdn.shopify.com/s/files/1/1353/1287/files/ti-ultra-titanium-fountain-pen-length-and-weight-specs.jpg?v=1768853178","https://cdn.shopify.com/s/files/1/1353/1287/products/ti-ultra-titanium-fountain-pen-metal-body-nibs-and-caps.jpg?v=1768857590","https://cdn.shopify.com/s/files/1/1353/1287/products/ti-ultra-titanium-fountain-pen-assembled-comparison.jpg?v=1768857590","https://cdn.shopify.com/s/files/1/1353/1287/products/ti-ultra-titanium-fountain-pen-disassembled-components-flatlay.jpg?v=1768857591","https://cdn.shopify.com/s/files/1/1353/1287/products/ti-ultra-titanium-fountain-pen-inking-dip-into-ink-bottle.jpg?v=1768857590","https://cdn.shopify.com/s/files/1/1353/1287/products/ti-ultra-titanium-fountain-pen-clip-pocket-attachment-closeup.jpg?v=1768857591","https://cdn.shopify.com/s/files/1/1353/1287/products/ti-ultra-titanium-fountain-pen-nibs-and-body-on-black.jpg?v=1768857590","https://cdn.shopify.com/s/files/1/1353/1287/products/ti-ultra-titanium-fountain-pen-dimensions-diagram-white.jpg?v=1768857590","https://cdn.shopify.com/s/files/1/1353/1287/products/ti-ultra-titanium-fountain-pen-included-parts-exploded-view.jpg?v=1768857590"],"price":240,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:48.380Z"},"share_url":"https://firestarter.network/l/lst_bH5jY-6s","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 ","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_bH5jY-6s' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Ti Ultra Pen' and a budget_max comfortably above $240.00 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."]}}