{"type":"firestarter.listing","listing":{"id":"lst_rNUS__fH","product_name":"HIFLUX 155 & 185 Wave Filters","category":"Paper Filter","description":"Engineered for those who refuse to compromise on what's in the cup.\nHIFLUX 155 & 185 Wave Filters 60 sheets pack\nBrewing great coffee is a science. The HIFLUX Wave Filter was designed with that in mind, and every element of its construction serves a specific, measurable purpose in how your coffee extracts, feels, and tastes.\nComplexity, by design.\nWhen water ponds above the coffee bed, the concentration gradient between water and coffee begins to equalize, slowing diffusion and limiting extraction efficiency. HIFLUX's high flow rate keeps fresh water moving through the bed continuously, maintaining a steep gradient and allowing extraction to work at full capacity. The result is complete, even extraction, even with a finer grind and in less time. Positive flavor compounds come forward while negative ones are suppressed. What you get is a cup with a noticeably more layered, complex flavor profile.\nBody and texture you can feel.\nThe lyocell weave in every HIFLUX filter is precisely engineered to allow micro-particles under 20 micrometers to pass through. That is not a flaw. It is intentional. Those particles are what give coffee its texture and weight. The outcome is a silky, velvety mouthfeel that you would not typically expect from a pour-over, even in lighter roasts. That body also brings balance to the overall cup, rounding out acidity and brightness without muting them.\nFlavor clarity that lasts.\nThis is where material choice matters most. Lyocell is a regenerated cellulose fiber, extruded into smooth, continuous threads rather than the wood pulp construction of traditional paper filters. That structural difference means significantly less surface area for lipid adhesion, allowing more oils to pass through. Since lipids carry aromatic compounds, the brew retains more aroma, more intensity, and more lasting flavor expression. The cup does not flatten after the first sip. It stays alive in the glass.\nAvailable in 155 and 185 sizes to fit your existing dripper se","images":["https://cdn.shopify.com/s/files/1/0275/3567/1361/files/HIFLUX_HIGHFAST_185.jpg?v=1772320972","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/HIFLUX_Closeup_-1.png?v=1772320972","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/HIFLUX_Closeup_-2.png?v=1772320972","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/HIFLUX_155_185_Wave.png?v=1772320972","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/HIFLUX_HOW_AND_WHY_adc099c1-39e2-4c25-9274-e35df7e414c6.png?v=1772320972","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/HIFLUX_HIGHFAST_2b401cb9-aec3-4eca-9099-b40ded88171b.png?v=1772320972","https://cdn.shopify.com/s/files/1/0275/3567/1361/files/HIFLUX_HIGHFAST-1.jpg?v=1772320972"],"price":17.5,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:44:25.432Z"},"share_url":"https://firestarter.network/l/lst_rNUS__fH","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 ","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_rNUS__fH' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy HIFLUX 155 & 185 Wave Filters' and a budget_max comfortably above $17.50 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."]}}