{"type":"firestarter.listing","listing":{"id":"lst_W9Xt810Q","product_name":"Ultem Fountain Pen Spare Parts","category":"Pen","description":"These sections allow you to change the grip/nib configuration of your \"Smoltem\" pocket fountain pen and \"Full Sized\" aluminum and engineered plastics fountain pens!\nCurrently available are Ultem 8 (Bock 380) sized sections in two lengths and #6 Jowo sections. These fit any of our \"Full Sized\" fountain pens as well as the \"Smoltem\" pocket pens and are not compatible with our \"Pocket Six\" fountain pens or Classic and V2 ballpoint pens.\nHere is a comparison photo of the V1 380 grip vs the V2, which is .2\" longer! Photo showing a 380 nib seated in the V2 grip. Note that the overall length from the nib tip to the back of the grip/base of pen body is the same between the two versions.\nThese grips do NOT include a nib - BYON (bring your own nib)!","images":["https://cdn.shopify.com/s/files/1/0281/7862/products/IMG_2211.jpg?v=1630681363","https://cdn.shopify.com/s/files/1/0281/7862/products/ultem8section.jpg?v=1630681363","https://cdn.shopify.com/s/files/1/0281/7862/products/IMG_2193.jpg?v=1630681363","https://cdn.shopify.com/s/files/1/0281/7862/products/IMG_2143.jpg?v=1630681363","https://cdn.shopify.com/s/files/1/0281/7862/products/IMG_2182.jpg?v=1630681363","https://cdn.shopify.com/s/files/1/0281/7862/products/IMG_2212.jpg?v=1769195363","https://cdn.shopify.com/s/files/1/0281/7862/products/IMG_2214.jpg?v=1769195363","https://cdn.shopify.com/s/files/1/0281/7862/products/IMG_2218.jpg?v=1769195363","https://cdn.shopify.com/s/files/1/0281/7862/products/IMG_2219.jpg?v=1769195363","https://cdn.shopify.com/s/files/1/0281/7862/files/8Bockv.2.jpg?v=1736450774","https://cdn.shopify.com/s/files/1/0281/7862/files/8Bockv.2.png?v=1736451093","https://cdn.shopify.com/s/files/1/0281/7862/files/bock_extra_long_ultem_section_natural.jpg?v=1739288404","https://cdn.shopify.com/s/files/1/0281/7862/files/bock_extra_long_ultem_section_black_526a057c-267e-4d38-9007-28af13319752.jpg?v=1739288652"],"price":30,"currency":"USD","in_stock":true,"inventory_qty":49995,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:17.180Z"},"share_url":"https://firestarter.network/l/lst_W9Xt810Q","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_W9Xt810Q' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Ultem Fountain Pen Spare Parts' and a budget_max comfortably above $30.00 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."]}}