{"type":"firestarter.listing","listing":{"id":"lst_O1O050yj","product_name":"B46 - König - Synthetic Stone with blue Ultem accents","category":"Fountain Pen","description":"The König—meaning \"the King\" in German—is our most commanding pen yet. Engineered for superior comfort and commanding presence, it delivers an exceptionally secure grip that remains stable through marathon writing sessions. The cap posts firmly and reliably, matching the precision of our Evancio model. Powered by a piston filler mechanism with an expansive ink window, you'll enjoy extended writing between refills. Handcrafted from premium synthetic stone (Tru-Stone), this pen showcases a striking palette of red, yellow, blue, and purple streaks. The blue Ultem complements the material incredibly well. The material's substantial weight creates an undeniably solid, substantial feel in hand—a pen that commands attention and delivers performance.\nDimensions:\n\n\n\n Length Capped:\n\n ~160 mm\n\n\n\nBody Diameter:\n\n 18.5 mm\n\n\n\nCap Diameter:\n20 mm\n\n\nSection Diameter max:\n16.5 mm\n\n\nSection Diameter min: \n15.75 mm\n\n\nWeight:\n10 oz\n\n\n\n\n\n\n\n ","images":["https://cdn.shopify.com/s/files/1/0329/5117/3260/files/JUN0926_PHOTO-161534.jpg?v=1781089432","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/JUN0926_PHOTO-161551.jpg?v=1781089433","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/JUN0926_PHOTO-161622.jpg?v=1781089433","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/JUN0926_PHOTO-161808.jpg?v=1781089433","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/JUN0926_PHOTO-161519.jpg?v=1781089433","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/JUN0926_PHOTO-161527.jpg?v=1781089433","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/Hinze-Custom-Order-Form-2_fdc4d158-7fc5-48f6-beb7-a2936ab961b5.jpg?v=1773762154","https://cdn.shopify.com/s/files/1/0329/5117/3260/files/Hinze-Custom-Order-Form-1_84619d7a-83c3-4c03-9ef7-1732129703e0.jpg?v=1773762154"],"price":449.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:20.871Z"},"share_url":"https://firestarter.network/l/lst_O1O050yj","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_O1O050yj' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy B46 - König - Synthetic Stone with blue Ultem accents' and a budget_max comfortably above $449.99 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."]}}