{"type":"firestarter.listing","listing":{"id":"lst_jRhMqgdU","product_name":"Leonardo Momento Zero Fountain Pen -  Pausilya GT","category":"Fountain Pen","description":"MZ Pausilya, from the ancient Greek Pausilypon, meaning “respite from worries,” is the Greek origin of the name Posillipo, one of the most elegant and scenic areas of the city of Naples. Hills rich in historic villas, gardens, archaeological parks, and a marine protected area, with spectacular views between sea and land that reflect the amber and dark teal  tones of the new MZ Pausilya.- - - Filling system converter/cartrigesThe nib:Steel nibs 'la fenice' EF, F, M, B, Stub1.1, Stub1.5Elastic steel nib Extra fine o FineGold nib 'la Fenice' EEF, EF, F, M, B, Stub1.1 Elastic Gold nib Elastic EF and Elastic FClosed pen lenght: 142mmCap lenght: 65mmBarrel lenght: 127mm (nib included)Weight inkless: 27gCap diameter: 15,5mmGrip diameter: 10,6mm ","images":["https://cdn.shopify.com/s/files/1/0575/7177/files/photo-output_3_66b5c1ff-4312-4071-b487-a69c482d5fe0.jpg?v=1777557723","https://cdn.shopify.com/s/files/1/0575/7177/files/Momento-zero-Pausilya.jpg?v=1775662466","https://cdn.shopify.com/s/files/1/0575/7177/files/Momento-zero-Pausilya-3.jpg?v=1775662470","https://cdn.shopify.com/s/files/1/0575/7177/files/Momento-zero-Pausilya-5.jpg?v=1775662473"],"price":179,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:59.016Z"},"share_url":"https://firestarter.network/l/lst_jRhMqgdU","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_jRhMqgdU' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Leonardo Momento Zero Fountain Pen -  Pausilya GT' and a budget_max comfortably above $179.00 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."]}}