{"type":"firestarter.listing","listing":{"id":"lst_VD3gxDj1","product_name":"2 Piece Double Cup Valve Grinder Set","category":"Engine & Drivetrain Tools","description":"This Powerbuilt double cup valve grinder set is perfect for hand lapping valves and valve seats. Includes a 9\" tool with 1-1/8\" and 1-3/8\" cups and an 8\" tool with 5/8\" and 13/16\" cups.\nValve lapping ensures an air-tight seal between the valve and valve seat. The high quality synthetic rubber cups are chemical resistant and built to last.\nThese non-slip cups are groove-locked to the tool's hardwood handle.\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. They meet or exceed applicable ANSI standards and have a lifetime warranty, all at affordable prices.\n\nEnsure an air-tight seal between valves and valve seats\nIncludes four cup sizes: 5/8\", 13/16\", 1-1/8\", and 1-3/8\"\nChemical resistant synthetic rubber cups\nStrong and dependable to last a lifetime\n","images":["https://cdn.shopify.com/s/files/1/0443/2681/3852/files/648448-01.jpg?v=1775732696","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/648448-02.jpg?v=1775732696","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/648448-03.jpg?v=1775732696","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/648448-e.png?v=1775732696","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/648448-05.jpg?v=1775732696"],"price":15.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:27:11.152Z"},"share_url":"https://firestarter.network/l/lst_VD3gxDj1","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_VD3gxDj1' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 2 Piece Double Cup Valve Grinder Set' and a budget_max comfortably above $15.95 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."]}}