{"type":"firestarter.listing","listing":{"id":"lst_YSWk-3Cf","product_name":"A24 - (SNR) - Tortuga Kolbenfüller","category":"Fountain Pen","description":"Hinze Pen Co. wouldn’t be the same without the dazzling touch of Starry Night Resins, the creative spark of Elyce Longazelle behind most of Hinze’s colorful acrylic pens. The A-24 Kolbenfüller Tortuga fountain pen is a true celebration of Elyce’s artistry, drawing inspiration from a special collaboration with her daughter, Natalie. The resin, lovingly named “Tortuga” (Spanish for “turtle”), features a smoky gray and blue base that’s playfully accented with lively splashes of mauve and blue—colors that echo the paintings they created together when Natalie was just 10 years old. Beyond its eye-catching resin, the pen shines with a sleek rhodium-plated clip and the iconic Hinze logo cap button. An extra-large ink window lets you keep a close eye on your ink supply, so you’re never caught off guard. Inside, the sturdy piston-filling system ensures smooth and reliable ink flow. The stainless steel nib comes in a full range of sizes from extra-fine to broad, with specialty 1.1 mm and 1.5 mm stubs also available—all offered in Hinze Pen Co.’s selection of stunning color-plated finishes. Whether you’re writing a quick note or crafting your next masterpiece, the Tortuga Kolbenfüller blends family creativity and expert craftsmanship into every stroke.","images":["https://cdn.shopify.com/s/files/1/0329/5117/3260/files/20251002-PXL_20251002_134229097.jpg?v=1759420284","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/Tortuga_-_Add_Page.jpg?v=1759420284","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/20251002-PXL_20251002_134150697.jpg?v=1759420284","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/20251002-PXL_20251002_134212282.jpg?v=1759420284","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/20251002-PXL_20251002_134155384.jpg?v=1759420284","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/20251002-PXL_20251002_134201496.jpg?v=1759420284","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/Hinze-Custom-Order-Form-1_Page_1_6723b42c-8f54-49e6-ae4b-a2dbc2273025.jpg?v=1771952136","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/Hinze-Custom-Order-Form-1_Page_2_10b8831f-3900-4907-a9c1-c8e010d342f3.jpg?v=1771952136"],"price":259.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:21.511Z"},"share_url":"https://firestarter.network/l/lst_YSWk-3Cf","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_YSWk-3Cf' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy A24 - (SNR) - Tortuga Kolbenfüller' and a budget_max comfortably above $259.99 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."]}}