{"type":"firestarter.listing","listing":{"id":"lst_j7NFnYlY","product_name":"Yu Kurosaki Kokusen AS Petty 150mm with Rosewood Octogon Wa Handle","category":"Petty Knife","description":"Overview\nThe Yu Kurosaki Kokusen AS Petty 150mm with Rosewood Octagon Wa Handle is a nimble, high-performance Japanese utility knife made for cooks who want precision, edge retention, and standout forged character in a practical everyday size. At 150mm, this petty gives you more reach than a smaller paring-style utility knife while still feeling controlled for detail work, trimming, slicing fruit, preparing herbs, breaking down smaller proteins, and handling quick board tasks where a gyuto may feel too large.\nThe Kokusen line pairs Aogami Super carbon steel with stainless cladding, giving the knife excellent edge life while reducing some of the maintenance required compared with fully reactive carbon steel blades. Yu Kurosaki’s hammered Kokusen finish gives the blade a bold, dark, textured look while helping with food release during prep. The rosewood octagon wa handle keeps the knife light, balanced, and comfortable for both pinch grip and handle-focused cutting styles.\nThis is a strong choice for anyone looking for a premium Japanese petty knife that can work as a small prep knife, line knife, or everyday utility blade. Because the exposed Aogami Super edge is reactive, wipe the knife dry during use, avoid soaking it, and never put it in the dishwasher. A natural patina may form over time. For storage or humid environments, a thin coat of Tsubaki oil can help protect the carbon steel edge.\nCommon Questions\nQ: What is a 150mm petty knife best used for?\nA: A 150mm petty knife is excellent for small-to-medium prep jobs such as slicing shallots, trimming proteins, cutting citrus, preparing garnishes, mincing garlic, and working with herbs. It is longer than a paring knife but easier to control than a full-size chef knife.\nQ: Is the Yu Kurosaki Kokusen AS Petty good for home cooks?\nA: Yes. This knife is a great fit for home cooks who want a premium utility knife with excellent sharpness and edge retention. It is especially useful if you cook often and want one small kn","images":["https://cdn.shopify.com/s/files/1/0602/6720/0736/files/yu-kurosaki-kokusen-as-petty-150mm-1_8f1b0857-3145-44a0-b002-f5ae97897aa7.jpg?v=1780737543","https://cdn.shopify.com/s/files/1/0602/6720/0736/files/yu-kurosaki-kokusen-as-petty-150mm-2_81572c32-095c-4395-9793-e1cd16f0f624.jpg?v=1780737543","https://cdn.shopify.com/s/files/1/0602/6720/0736/files/yu-kurosaki-kokusen-as-petty-150mm-3_3f16824a-edec-48ae-a984-29c2d2125a14.jpg?v=1780737543","https://cdn.shopify.com/s/files/1/0602/6720/0736/files/yu-kurosaki-kokusen-as-petty-150mm-4_01e58b8a-cda7-425f-ab84-7adb66416e9d.jpg?v=1780737543"],"price":245,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:44:30.247Z"},"share_url":"https://firestarter.network/l/lst_j7NFnYlY","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_j7NFnYlY' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Yu Kurosaki Kokusen AS Petty 150mm with Rosewood Octogon Wa Handle' and a budget_max comfortably above $245.00 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."]}}