{"type":"firestarter.listing","listing":{"id":"lst_kXIcVDOb","product_name":"KNKMiami - SpringCore Balance Duo Adult Level 3 (260 lb Limit)","category":"Gymnastics & Bodyweight Equipment","description":"\n\nStacked three-springboard design: Double the challenge of the standard trainers for advanced balance work.\n\nDominate balance and agility: The unstable platform sharpens balance and coordination for precise, controlled movement.\n\nEnhanced ankle range of motion: Maximizes ankle flexibility for greater overall performance.\n\nSupports up to 260 lb: The most demanding trainer in the line, built for advanced adult users.\n\nNon-skid platform and cushion: A secure grip and comfortable cushion minimize the risk of slipping.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/KNKMiami_Product_Photo-_SpringCore_Balance_Duo_Adult_3cb6a825-0c28-42aa-ad39-1841f3c640f5.jpg?v=1780603561","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/KNKMiamiProductPhoto-SpringCoreBalanceDuoAdult1.jpg?v=1780603561"],"price":259,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:50.413Z"},"share_url":"https://firestarter.network/l/lst_kXIcVDOb","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_kXIcVDOb' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy KNKMiami - SpringCore Balance Duo Adult Level 3 (260 lb Limit)' and a budget_max comfortably above $259.00 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."]}}