{"type":"firestarter.listing","listing":{"id":"lst_yo31AwOx","product_name":"Graycano GC01 Filter 100 Sheet","category":"Paper Filter","description":" As a safety precaution, all filters are final sale and not returnable.\nGC01 by graycano\n \nEngineered by Graycano, the GC01 is a precision-crafted conical paper filter optimized for seamless integration with the Graycano brewing system, specifically tailored for everyday use.\nManufactured in Japan using high-grade virgin pulp, the GD01 filter features meticulously calculated angles and diameters to ensure an exact fit over Graycano’s Lava Ribs. This geometry supports uniform water dispersion and stable thermal retention, critical for achieving optimal extraction dynamics.\nThe GC01 delivers a controlled and consistent flow rate, enabling brewers to highlight delicate floral aromatics and fruit-forward flavor profiles while preserving overall cup balance - even when utilizing lower brewing temperatures.\n As a safety precaution, all filters and minerals are final sale and not returnable.","images":["https://cdn.shopify.com/s/files/1/0275/3567/1361/files/GC01.png?v=1762446868","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/Graycano_GC01_Filter-1.jpg?v=1749246748","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/Graycano_GC01_Filter-2.jpg?v=1749246748","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/Graycano_GC01_Filter-3.jpg?v=1749246748","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/Graycano_GC01_Filter-4.jpg?v=1749246748","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/APAX_LAB_x_SLOW_POUR_20ml-2.png?v=1751992793"],"price":15.25,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:44:25.502Z"},"share_url":"https://firestarter.network/l/lst_yo31AwOx","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_yo31AwOx' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Graycano GC01 Filter 100 Sheet' and a budget_max comfortably above $15.25 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."]}}