{"type":"firestarter.listing","listing":{"id":"lst_RKdRDa1V","product_name":"A.A. Vacharat Engraved Art Model 40M Deco City - Onyx","category":"Fountain Pen - Vacharat","description":"We will make up to 51 pieces of these, so sign up for the back in stock notice if interested.\nFeaturing the \"Deco City\" design on Model 40 Modified pieces in Onyx acrylic. The artist's signature is found within the art. Included is lifetime warranty paperwork, converter, usual #6 nib choices, cartridge samples, zippered pouch, etc. \n$185 USD. Nibs start at $25 USD. ","images":["https://cdn.shopify.com/s/files/1/0023/7679/4187/files/AAV40MDecoCityblack4wart.jpg?v=1775508219"],"price":185,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:20.113Z"},"share_url":"https://firestarter.network/l/lst_RKdRDa1V","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_RKdRDa1V' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy A.A. Vacharat Engraved Art Model 40M Deco City - Onyx' and a budget_max comfortably above $185.00 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."]}}