{"type":"firestarter.listing","listing":{"id":"lst_nl4WE-3n","product_name":"The Elementar","category":"Fountain Pen","description":"Elementar in German means elementary, basic. The definition is \"of or relating to the most rudimentary aspects of a subject\". The Elementar is the epitome of the definition, and the perfect entry level pen to begin your custom pen collection. This base fountain pen is where my custom pen making started. It is also the model that I use when teaching other pen makers. This average sized pen is a little longer than 5.5\" capped, is about .582\" is diameter at the widest part of the barrel. The cap can be made flush with the body or be a little proud. Cap threads are 13mm.This pen feels great in the hand whether taking quick notes or sitting down for a long journal session. It is available in virtually any color desired. Specify a 2 or 3 color combination in the notes when ordering and specify \"primary\" or \"accent\" for each color. As shown, the color choices would read \"Black - Primary\", \"Red - Secondary\".This pen is the base model only. You may specify colors when ordering (use comments in section 4 of the checkout process).","images":["https://cdn.shopify.com/s/files/1/0329/5117/3260/products/BL-0R446.jpg?v=1581279505","https://cdn.shopify.com/s/files/1/0329/5117/3260/products/BL-0R457.jpg?v=1581279505","https://cdn.shopify.com/s/files/1/0329/5117/3260/products/BL-0R475.jpg?v=1581279505","https://cdn.shopify.com/s/files/1/0329/5117/3260/products/BL-0R480.jpg?v=1581279505","https://cdn.shopify.com/s/files/1/0329/5117/3260/products/BL-0R505.jpg?v=1581279506","https://cdn.shopify.com/s/files/1/0329/5117/3260/products/BL-0R514.jpg?v=1581279506"],"price":179.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.709Z"},"share_url":"https://firestarter.network/l/lst_nl4WE-3n","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_nl4WE-3n' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy The Elementar' and a budget_max comfortably above $179.99 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."]}}