{"type":"firestarter.listing","listing":{"id":"lst_MWL7hbxa","product_name":"H&R 60mm ID Single Race Spring | Length 200mm | Spring Rate 80 N/mm or 457 lbs/inch","category":"Race Dept > Suspension > Linear Springs","description":"Inside Diameter: 60mm ID Length: 200mm Spring Rate: 80 N/mm or 457 lbs/inch  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/60mmidrace_ccceeba0-cf0e-4fdb-bf8d-1b8dbf6e1fbd.png?v=1783982694"],"price":76.46,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-07-14T01:31:32.175Z"},"share_url":"https://firestarter.network/l/lst_MWL7hbxa","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_MWL7hbxa' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy H&R 60mm ID Single Race Spring | Length 200mm | Spring Rate 80 N/mm or 457 lbs/inch' and a budget_max comfortably above $76.46 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."]}}