{"type":"firestarter.listing","listing":{"id":"lst_UYMxT7cj","product_name":"XMARK - Convict 6ft Rackable Curl Bar","category":"EZ Curl Bar","description":"\n\nRack Compatibility: Fits standard power racks to support racked curls and keep starts stable, helping target biceps and forearms with control.\n\n52-Inch Shaft Length: 52 in shaft balances the bar to improve curl mechanics and keep wrists aligned, helping target biceps and forearms.\n\nKnurled Grip: Provides a secure, non-slip hold to improve control on curls and extensions, keeping biceps, triceps, and forearms on target.\n\nRotating Sleeves: Provide smooth plate rotation to keep wrists and elbows aligned and improve form while you target biceps and forearms.\n\nDurable Construction: High-quality steel build to withstand frequent arm sessions and deliver long-term performance for curls and extensions.\n\nOlympic Plate Compatibility: Fits Olympic plates to support progressive loading and build stronger biceps, triceps, and forearms over time.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/CONVICT-1.jpg?v=1780592058","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/XM-Landing-Page-Assets-Curl-Barbell-15.jpg?v=1780592060","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/XM-Landing-Page-Assets-Curl-Barbell-16.jpg?v=1780592060","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/XM-Landing-Page-Assets-Curl-Barbell-14.jpg?v=1780592058","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/CONVICT-10.jpg?v=1780592059","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/CONVICT-3.jpg?v=1780592058","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/CONVICT-5.jpg?v=1780592058","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/CONVICT-8.jpg?v=1780592058","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/CONVICT-9.jpg?v=1780592059"],"price":159,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:57.268Z"},"share_url":"https://firestarter.network/l/lst_UYMxT7cj","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_UYMxT7cj' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy XMARK - Convict 6ft Rackable Curl Bar' and a budget_max comfortably above $159.00 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."]}}