{"type":"firestarter.listing","listing":{"id":"lst_V3fpXOnG","product_name":"Model 31 Omnis Fountain Pen - Emerald","category":"Fountain Pen - Model 31","description":"\n♦ The Model 31 encompasses features from several F-C models. The grip section is like that of the 40 Panther, the silhouette is a slightly slimmer version of the 19, precision posting like the 20, 45, and 03, cut grooves and recessed nib like the 20. \n\n\n♦ Dimensions:.625\" cap diameter (15.87mm).531\" upper barrel diameter (13.49mm)5.50\" capped length (139mm)6.755\" cap posted length including nib (172mm)5.250\" barrel length including nib (133mm).42\" grip section at thinnest point (10.67mm)Weight without ink = .92 oz / 26.08g\n\n\n ♦ Made in USA of long lasting, durable hard acrylic that is light weight. ♦ Standard Int'l Cartridge / Converter filled, one of each included. Also can be used as an eyedropper. ♦ #6 Size nib - with many tip options in factory or custom ground. ♦ Lifetime Warranty. ♦ In lieu of a traditional gift box we ship with a Franklin-Christoph single pen zippered pouch with an outer white thin box.  \n","images":["https://cdn.shopify.com/s/files/1/0023/7679/4187/files/31Emerald.jpg?v=1764612921"],"price":160,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:20.982Z"},"share_url":"https://firestarter.network/l/lst_V3fpXOnG","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_V3fpXOnG' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Model 31 Omnis Fountain Pen - Emerald' and a budget_max comfortably above $160.00 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."]}}