{"type":"firestarter.listing","listing":{"id":"lst_B0QuFzKF","product_name":"MRX - Weight Lifting Belt For Gym Workout 8\" Wide - Lumbar Back Support All Sizes","category":"Lifting Belts","description":"\n  \n8 inch wide back panel: Delivers broad coverage to support your lower back during squats, deadlifts, and heavy compound lifts.\n  \nNeoprene and nylon build: Provides a firm yet flexible hold that moves with your body and holds up through demanding sessions.\n  \nPadded backing: Adds cushioning across the lumbar region for comfort and protection during long training sessions.\n  \nLoop and hook closure: Lets you adjust the fit quickly so the belt stays secure through every set.\n  \nMetal buckle clip: Keeps the belt firmly in place so you can focus on the lift with confidence.\n  \nFirm abdominal support: Builds core stability to help you brace and perform on heavy movements.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blk_5.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blu_5.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-gry_5.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-red_5.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-size_chart.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blk.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blk_1.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blk_2.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blk_3.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blk_4.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-red.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-red_1.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-red_2.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-red_3.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-red_4.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blu.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blu_1.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blu_2.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blu_3.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-blu_4.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-gry.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-gry_1.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-gry_2.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-gry_3.jpg?v=1780605540","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/2004-gry_4.jpg?v=1780605540"],"price":15.99,"currency":"USD","in_stock":true,"inventory_qty":129987,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:48.964Z"},"share_url":"https://firestarter.network/l/lst_B0QuFzKF","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_B0QuFzKF' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy MRX - Weight Lifting Belt For Gym Workout 8\" Wide - Lumbar Back Support All Sizes' and a budget_max comfortably above $15.99 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."]}}