{"type":"firestarter.listing","listing":{"id":"lst_LnxZxj6W","product_name":"Diadem Premier Extra Duty Ball - Can","category":"Tennis Ball","description":"Always play to win. The highly-anticipated Diadem Premier Extra Duty Ball is available NOW. Ideal for hard courts.\nDiadem Premier Balls are tournament level tennis balls designed for enhanced durability and consistent playability. Engineered using premium TTI felt, the Premier Extra Duty Ball is ideal for hard courts. The Diadem Premier Ball is sanctioned and approved for ITF and USTA tournaments. Available in three-ball cans and 24-can cases. ","images":["https://cdn.shopify.com/s/files/1/0253/6210/4402/products/ExtradutyCan.jpg?v=1762443616"],"price":5.49,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:57.551Z"},"share_url":"https://firestarter.network/l/lst_LnxZxj6W","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_LnxZxj6W' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Diadem Premier Extra Duty Ball - Can' and a budget_max comfortably above $5.49 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."]}}