{"type":"firestarter.listing","listing":{"id":"lst_J6dp0z2p","product_name":"XMARK - Commercial Power Rack Cable Machine, 440 lbs Total Stack Weight","category":"Cable System","description":"\n\nLimitless workout options: Train back, chest, legs, and core with cables, free weights, arched grips, and a 1.25 in straight pull-up bar.\n\nIndustrial-strength frame: Build on an 11-gauge steel 3 in x 3 in mainframe with 1 in bolts to withstand heavy squats, presses, and rack pulls.\n\n440 lb of resistance: Use dual 220 lb stacks with a 2:1 pulley ratio to deliver smooth cable work for lats, chest, and core.\n\nStainless-steel components: Anchor low rows on a stainless steel footplate and store plates on eight weight storage posts.\n\nPremium aluminum accessories: Add revolving straight, curl, and lat bars plus a v-bar to target lats, biceps, and triceps.\n\nSafety features: Lock in with flip-down safeties, J-cups, and front foot extensions to keep squats and presses secure.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/9154-white-square.jpg?v=1780592055","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/9153-white-square.jpg?v=1780592055","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/9154.jpg?v=1780592056","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/9154-call-out-01.jpg?v=1780592056","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/weight_stack-9100.jpg?v=1780592055","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/9100-handles-pulleys.jpg?v=1780592055","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/include-accessories-9100.jpg?v=1780592055"],"price":4929,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:49.290Z"},"share_url":"https://firestarter.network/l/lst_J6dp0z2p","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_J6dp0z2p' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy XMARK - Commercial Power Rack Cable Machine, 440 lbs Total Stack Weight' and a budget_max comfortably above $4929.00 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."]}}