{"type":"firestarter.listing","listing":{"id":"lst_EoGYFLoX","product_name":"3 Piece 4 in. Cylinder Hone Stones (Medium Grit #220)","category":"Engine & Drivetrain Tools","description":"This is a set of three replacement medium grit stones and cotter pins for Powerbuilt product #648439 or another cylinder hone deglazer.\nThese high-quality 4\" medium grit stones (#220) are designed to deglaze engines on a cylinder hone. Set also includes corresponding cotter pins.\nAny automotive specialty tool makes an automotive repair or maintenance task easier, but Powerbuilt takes the concept of ‘help’ a big step further.  \nEvery package comes with professionally written usage instructions and photos that take you step by step through proper tool usage.\nDependable Powerbuilt specialty tools offer power, precision and style.\n\n#220 medium grit 4\" replacement stones\nIncludes cotter pins\nDesigned for use on cylinder hone deglazer such as Powerbuilt #648439\nMeets or exceeds ANSI standards\nHone stones are product #647361\n","images":["https://cdn.shopify.com/s/files/1/0443/2681/3852/files/647361-01.jpg?v=1765963172","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/647361-pkg.jpg?v=1765963172"],"price":16.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:27:10.446Z"},"share_url":"https://firestarter.network/l/lst_EoGYFLoX","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_EoGYFLoX' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 3 Piece 4 in. Cylinder Hone Stones (Medium Grit #220)' and a budget_max comfortably above $16.95 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."]}}