{"type":"firestarter.listing","listing":{"id":"lst_fefU6Fo-","product_name":"High Performance Valve Spring Compressor","category":"Specialty Kits","description":"This handy stud mount valve spring compressor tool makes it easy and safe to remove and reinstall valve springs and retainers easy. The high strength design holds up to powerful solid roller springs. A full 12\" long handle offers the leverage needed to compress high performance valve springs. The reversible design works with both 3/8\" &amp; 7/16\" studs. It's equally useful for valve work on the engine or on the bench. Meets or exceeds ANSI standards.\nFeatures &amp; Benefits\n\nSimple effective and powerful tool for compressing high performance valve springs\nLocks in place to free up both hands\nFits 3/8\" and 7/16\" valve studs\n12\" long handle offers plenty of leverage for compressing springs\nMeets or exceeds ANSI standards\n","images":["https://cdn.shopify.com/s/files/1/0443/2681/3852/files/940541-a.png?v=1775732696","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/940541-02.jpg?v=1775732696","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/940541-03.jpg?v=1775732696","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/940541-04.jpg?v=1775732696","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/940541-e.png?v=1775732696"],"price":59.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:27:12.344Z"},"share_url":"https://firestarter.network/l/lst_fefU6Fo-","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_fefU6Fo-' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy High Performance Valve Spring Compressor' and a budget_max comfortably above $59.95 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."]}}