{"type":"firestarter.listing","listing":{"id":"lst_xEaK8xWI","product_name":"The Brass Wren - Refillable Writing Pen","category":"Wren","description":"\nBrass is one of those materials that just gets better with age – like a good book, or a well-used armchair. It warms to your touch, tells a story with every scuff, and carries the kind of quiet confidence only old souls (and finely tuned pens) can pull off.\nThe Brass Wren takes all the things people love about the original – refillable, balanced, built to last – and gives it the kind of weight that says: “yep, I mean business.\" At 53g, it’s more than double the weight of the standard Wren (20g). It’s fitted with a precision Japanese-made tip, engineered to glide across the page, and machined right here in the UK by people who usually make things like luxury watches and aerospace bits. In short: no corner-cutting here.\nIt’s got that unmistakable feel of a pen that’s going to be with you for the long haul – through ideas, to-dos, doodles, drafts and deep thoughts in cafés. Perfect for modern thinkers with a soft spot for the analogue – the kind who annotate in margins and name their favourite pens.\nBuilt to last, beautifully.\n\n","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/BrassWren_1.jpg?v=1772120483","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/brass-wren-2.jpg?v=1772120483","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/brass-wren-4.jpg?v=1772120483","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/brass-wren-3.jpg?v=1772120483","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/brass-wren-5.jpg?v=1772120483","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/Wren_Tips_LS_SQ.jpg?v=1772110801","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/wren-refillable-writing-pen-reservoir-refill.jpg?v=1756238812","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/lumos-compatible-inks.jpg?v=1774603901","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/wren-refillable-writing-pen-blush-midnight-eiffel-tower.jpg?v=1756238812","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/brass-wren-posted.jpg?v=1760699525","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/brass-wren-boxed.jpg?v=1757343495","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/brass-wren-capped.jpg?v=1757494544"],"price":82,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:22.942Z"},"share_url":"https://firestarter.network/l/lst_xEaK8xWI","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_xEaK8xWI' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy The Brass Wren - Refillable Writing Pen' and a budget_max comfortably above $82.00 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."]}}