{"type":"firestarter.listing","listing":{"id":"lst_OlhtXQv6","product_name":"Hatsukokoro Kumokage Blue #2 210mm Gyuto","category":"Gyuto Knife","description":"Overview\nThe Hatsukokoro Kumokage Blue #2 Gyuto 210 mm marries “cloud shadow” aesthetics with serious kitchen workhorse performance. Hand-forged in Tosa, its Blue #2 carbon-steel core (≈ HRC 62+) takes a screaming-sharp edge, while the kurouchi-Damascus cladding shrugs off food stick-and-slide and adds rustic character. At just 137 g, this gyuto darts through herbs and proteins alike, yet the 3 mm spine at the heel gives it the backbone for harder veg. A mono bubinga handle offers warm grip and long-term stability—ready for service line intensity or home-cook creativity. Note- Bubinga can vary significantly between dark and light tones. \nCommon Questions\nQ: Is a 210 mm gyuto versatile enough for a small kitchen?A: Yes. 210 mm (about 8.25\") is Japan’s standard chef-knife length—long enough for roasts, compact enough for apartment boards, and nimble for detail work.\nQ: How do I stop carbon steel from rusting?A: Rinse, wipe completely dry, and store lightly oiled. A grey-blue patina will form with use—that’s protective, not harmful.\nQ: Does the kurouchi finish affect food safety?A: No. Kurouchi is simply the black iron-oxide scale left from forging. It’s food-safe and helps guard against re-oxidation.\nSpecifications\n\n\nCore Steel: Blue #2 (Aogami)\n\nCladding Type: Soft iron, Damascus pattern (Rust Prone) \n\nBlade Length: 210 mm\n\nOverall Length: — (Specs not found)\n\nSpine Thickness (Heel): 3 mm\n\nSpine Thickness (Mid): —\n\nBlade Height (Heel): 47 mm\n\nWeight: 137 g\n\nHandle Material: Mono bubinga (octagonal)\n\nHardness (HRC): ≈ 62+\n\nConstruction: San-mai, hammer-forged\n\nEdge Grind: 50/50 even\n","images":["https://cdn.shopify.com/s/files/1/0602/6720/0736/files/hatsukokoro-kumokage-blue2-gyuto-210mm-4.jpg?v=1753446465","https://cdn.shopify.com/s/files/1/0602/6720/0736/products/hatsukokoro-kumokage-blue2-210mm-gyuto-no-handle-465899.jpg?v=1753446465","https://cdn.shopify.com/s/files/1/0602/6720/0736/files/hatsukokoro-kumokage-blue2-gyuto-210mm-3.jpg?v=1753446465"],"price":199,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:44:31.968Z"},"share_url":"https://firestarter.network/l/lst_OlhtXQv6","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_OlhtXQv6' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Hatsukokoro Kumokage Blue #2 210mm Gyuto' and a budget_max comfortably above $199.00 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."]}}