{"type":"firestarter.listing","listing":{"id":"lst_FhUDsoNk","product_name":"3 Piece 4 in. Cylinder Hone Stones (Coarse Grit #120)","category":"Engine & Drivetrain Tools","description":"This is a set of three replacement coarse grit stones and cotter pins for Powerbuilt product #648439 or another cylinder hone deglazer. These high-quality 4\" coarse grit stones (#120) are designed to deglaze engines on a cylinder hone. Set also includes corresponding cotter pins.\nThis automotive specialty tool from Powerbuilt will help make the job at hand easier and quicker whether you are a seasoned professional or a casual weekend mechanic.  Dependable Powerbuilt specialty tools offer power, precision and style. They meet or exceed applicable ANSI standards at affordable prices.\n\n#120 coarse grit 4\" replacement stones\nIncludes cotter pins\nDesigned for use on cylinder hone deglazer such as Powerbuilt #648439\nMeets or exceeds ANSI standards\nGrit stones are product #647360\n","images":["https://cdn.shopify.com/s/files/1/0443/2681/3852/files/647360_123.jpg?v=1765963151","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/647360-pkg.jpg?v=1765963151"],"price":20.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:27:12.334Z"},"share_url":"https://firestarter.network/l/lst_FhUDsoNk","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_FhUDsoNk' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 3 Piece 4 in. Cylinder Hone Stones (Coarse Grit #120)' and a budget_max comfortably above $20.95 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."]}}