{"type":"firestarter.listing","listing":{"id":"lst_WOzqTTYq","product_name":"Model 45XL Fountain Pen - Midnight Blue & Nuclear Green","category":"Fountain Pen - Model 45XL","description":"\nSELLING CONDITION:  NEW OLD STOCK. Model has been retired.\nHere is the longest edition of the 45 fountain pen model - the 45XL in Midnight Blue with a splash of color on the end with Nuclear Green. The barrel on these are 3/8\" longer than the 45L. \n♦ Dimensions:.550\" cap diameter.510\"  barrel diameter 5.37\" capped length6.37\" cap posted length (including nib)5.06\" barrel only length (including nib).383\" grip section at thinnest point (curved)weight without ink = .56oz / 15.74g♦ Still a pocket pen but long enough to fit a standard converter (included)♦ Classic lines w/ no clip♦ Cartridge, converter, or eye dropper filled. Barrel holds approximately 3.5ml of ink when eyedroppered.♦ Precision posting for firm grip on the cap while posted.♦ No. 5 size nib♦ Lifetime warranty♦ Made in USA in our NC facility♦ In lieu of a traditional gift box we ship with a zippered pouch with an outer white thin box. ","images":["https://cdn.shopify.com/s/files/1/0023/7679/4187/files/franklin-christoph-45xl-fountain-pen-midnight-blue-nuclear-green-a1b2c3d4.jpg?v=1779894050","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/franklin-christoph-45xl-fountain-pen-midnight-blue-nuclear-green-a1b2c3.jpg?v=1779894050"],"price":106.25,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:19.944Z"},"share_url":"https://firestarter.network/l/lst_WOzqTTYq","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_WOzqTTYq' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Model 45XL Fountain Pen - Midnight Blue & Nuclear Green' and a budget_max comfortably above $106.25 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."]}}