{"type":"firestarter.listing","listing":{"id":"lst_GQdNomtb","product_name":"Model 45L Fountain Pen - Ruby","category":"Fountain Pen - Model 45L","description":"\nSELLING CONDITION:  NEW OLD STOCK. Model has been retired.\n♦ Dimensions:.550\" cap diameter.510\"  barrel diameter 5\" capped length6.12\" cap posted length (including nib)4.75\" barrel only length (including nib).383\" grip section at thinnest point (curved)weight without ink = .53oz / 15.14g; barrel holds approximately 3.5ml of ink when eyedroppered.♦ Still a pocket fountain pen but long enough to fit a standard converter (included)♦ Classic lines w/ no clip♦ Cartridge, converter, or eye dropper filled. ♦ Precision posting for firm grip on the cap while posted.♦ No. 5 size nib♦ Lifetime warranty♦ Made in USA in our NC facility","images":["https://cdn.shopify.com/s/files/1/0023/7679/4187/files/45LRubyFountainPen.jpg?v=1710525866","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/45LRubyFPside.jpg?v=1710525869"],"price":97.75,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:20.006Z"},"share_url":"https://firestarter.network/l/lst_GQdNomtb","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_GQdNomtb' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Model 45L Fountain Pen - Ruby' and a budget_max comfortably above $97.75 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."]}}