{"type":"firestarter.listing","listing":{"id":"lst_JwSr0U3Q","product_name":"H&R Sport Springs | Audi A3 Sedan Quattro","category":"Suspension > Springs","description":"Fits only 2015+ Audi A3 Sedan Quattro.  Lowers car 1.5\" front, 1.5\" rear.\n\nThe most popular spring in H&amp;R's line-up, Sport Springs will lower your vehicle for a lower center of gravity, improved handling and a more aggressive appearance. Sport springs feature more control than that of the OE Sport spring, but is still comfortable for daily use. Sport springs are an excellent choice for street and occasional track use. These springs are fully compatible with cars fitted with Volkswagens's switchable ACC (Adjustable Chassis Control) dampers.\n  H&amp;R was founded by Werner Heine and Heinz Remmen in the 1970's with a simple idea in mind; with improved suspension, vehicles would have more control and better handling.","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/50340.jpg?v=1783984384"],"price":339.15,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-07-14T01:31:31.793Z"},"share_url":"https://firestarter.network/l/lst_JwSr0U3Q","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_JwSr0U3Q' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy H&R Sport Springs | Audi A3 Sedan Quattro' and a budget_max comfortably above $339.15 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."]}}