{"type":"firestarter.listing","listing":{"id":"lst_k4apElyE","product_name":"Leonardo Momento Zero Grande 2.0 Fountain Pen – Crepuscolo Marino – ST #8","category":"Fountain Pen","description":"Description\nCrepuscolo Marino (Twilight on the Sea) captures the glowing hues of the sun as it dips below the horizon—ochre, orange, and deep blue blending into one another like light dancing across gentle waves. This color evokes the calm, meditative atmosphere of twilight, offering the same sense of quiet focus that writing can bring.\n\nTechnical Details\n\n  \nNib: Steel #8\n  \nFilling System: Integrated piston mechanism, 1.5 ml capacity\n  \nInk Window: Transparent window to view ink level\n  \nFeed: Japanese black ebonite\n  \nIncluded: Ink bottle\n  \nService Tool: Piston disassembly compatible (tool sold separately)\n\n","images":["https://cdn.shopify.com/s/files/1/0575/7177/files/Leonardo-Momento-Zero-Grande-2_0-Fountain-Pen-Crepuscolo-Marino-ST-8_763c6e8e.jpg?v=1762525590","https://cdn.shopify.com/s/files/1/0575/7177/files/Leonardo-Momento-Zero-Grande-2_0-Fountain-Pen-Crepuscolo-Marino-ST-8-2_7d3a7e9f.jpg?v=1762525603","https://cdn.shopify.com/s/files/1/0575/7177/files/Leonardo-Momento-Zero-Grande-2_0-Fountain-Pen-Crepuscolo-Marino-ST-8-3_4e25d17b.jpg?v=1762525615","https://cdn.shopify.com/s/files/1/0575/7177/files/Leonardo-Momento-Zero-Grande-2_0-Fountain-Pen-Crepuscolo-Marino-ST-8-4_6dc3ec35.jpg?v=1762525628","https://cdn.shopify.com/s/files/1/0575/7177/files/Leonardo-Momento-Zero-Grande-2_0-Fountain-Pen-Crepuscolo-Marino-ST-8-5_b1bfbaa1.jpg?v=1762525640","https://cdn.shopify.com/s/files/1/0575/7177/files/Leonardo-Momento-Zero-Grande-2_0-Fountain-Pen-Crepuscolo-Marino-ST-8-6.jpg?v=1762525641"],"price":372,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:59.501Z"},"share_url":"https://firestarter.network/l/lst_k4apElyE","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_k4apElyE' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Leonardo Momento Zero Grande 2.0 Fountain Pen – Crepuscolo Marino – ST #8' and a budget_max comfortably above $372.00 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."]}}