{"type":"firestarter.listing","listing":{"id":"lst_mCBioy3S","product_name":"Midnight Leather Lumos Grip and Rollstop","category":"Lumos","description":"A little extra comfort, handcrafted by someone who knows our pens inside out.\nThis beautiful leather grip and rollstop has been carefully made by the oh-so talented Tobi Robinson – a talented maker and former member of the Tom’s Studio team (read more here). Now based just up the road in Bristol, we’re chuffed to be working together again. Each one’s crafted in a small batch, with the leather cut, bevelled, hand-finished, glued, and stitched with plenty of care. The result? A tactile little upgrade that adds comfort, grip, and stops your Lumos from rolling off mid-thought.\nMeasuring 12–13mm in diameter, they offer an extra-comfortable in-hand feel. They also slide up and down, so you can use them easily on either end of your Lumos Pro Duo.","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/MidnightPenGrip.jpg?v=1745323284","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/MidnightPenGrip-3.jpg?v=1743779814","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/MidnightPenGrip-5.jpg?v=1761211252","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/MidnightPenGrip-4.jpg?v=1743769402"],"price":19,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.022Z"},"share_url":"https://firestarter.network/l/lst_mCBioy3S","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_mCBioy3S' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Midnight Leather Lumos Grip and Rollstop' and a budget_max comfortably above $19.00 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."]}}