{"type":"firestarter.listing","listing":{"id":"lst_2pdc5dLR","product_name":"Overhead Valve Spring Compressor","category":"Engine & Drivetrain Tools","description":"Remove valve springs without removing the cylinder head with this overhead valve spring compressor. The different length jaws allow the spring compressor to get a grip on the valve spring coils in two separate places. The T-handle has a hex surface so the screw can also be turned with a socket or end wrench.\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.\nRemoves valve springs without removing cylinder head\nDifferent length jaws provide a more secure grip on valve spring\nT-handle can also be turned with socket or end wrench","images":["https://cdn.shopify.com/s/files/1/0443/2681/3852/products/648432-01.jpg?v=1639873097","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/648432-02.jpg?v=1639873097","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/648432-03.jpg?v=1639873097","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/648432-04.jpg?v=1639873097"],"price":20.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:27:12.157Z"},"share_url":"https://firestarter.network/l/lst_2pdc5dLR","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_2pdc5dLR' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Overhead Valve Spring Compressor' 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."]}}