{"type":"firestarter.listing","listing":{"id":"lst_HIwvCCrh","product_name":"Graycano Dripper S - Cast Aluminum Pourover Brewer","category":"Coffee Dripper","description":"The Graycano Dripper S brings the full brewing performance of the Graycano Dripper into a sportive, convenient format. In place of the original Graycano's cork sleeve, the Dripper S fits a precisely seated silicone ring, kept in position by a subtle groove in the dripper body. The result is a cleaner profile and the same confident grip.\nWhere most pour over drippers are made from ceramic, glass, or plastic, the Graycano uses cast aluminium: a material that heats quickly, holds temperature steadily, and will not chip, crack, or break. Cast from aluminium and finished with a food-safe coating, it is built to hold heat, guide flow, and stay out of the way of what matters.\nThis listing is for the Graycano Dripper S. It is compatible with small size conical filters and brews comfortably in the single cup range.\nThe Design Behind It\nThe Graycano dripper was developed around one persistent problem in pour over brewing: heat loss. By the time water leaves the kettle spout and meets the coffee bed, temperature has already dropped. If the dripper itself is cold, it draws more heat away. The Graycano addresses this with two structural decisions working in parallel.\nThe first is the Lava Ribs: V-shaped interior protrusions that lift the filter from the dripper wall, guide water evenly downward through the coffee bed, and channel airflow consistently from pour to drawdown. The rib geometry was shaped around the natural flow of water through a cone, reinforcing it rather than interrupting it.\nThe second is the air pocket system beneath the dripper. Large hollow chambers capture rising steam from the brewed coffee below, using that heat to keep the aluminium body warm through the full brew. The dripper becomes a passive heat source, not just a passive vessel.\nThe Dripper S replaces the cork sleeve of the original Graycano with a silicone ring set into a grooved channel on the exterior. The grip is secure, the heat protection is equivalent, and the overall form is more compact. The","images":["https://cdn.shopify.com/s/files/1/0275/3567/1361/files/GrqaycanoDripperS-2.png?v=1780693124","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/GrqaycanoDripperS-3.png?v=1780693124","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/GrqaycanoDripperS-4.png?v=1780693124","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/GrqaycanoDripperS-5.png?v=1780693124","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/GrqaycanoDripperS-6.png?v=1780693125","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/GrqaycanoDripperS-7.png?v=1780693125","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/GrqaycanoDripperS.png?v=1780693124"],"price":77,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:44:25.345Z"},"share_url":"https://firestarter.network/l/lst_HIwvCCrh","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_HIwvCCrh' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Graycano Dripper S - Cast Aluminum Pourover Brewer' and a budget_max comfortably above $77.00 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."]}}