{"type":"firestarter.listing","listing":{"id":"lst_xFcYsSlx","product_name":"XMARK - EZ Curl Bar 28 mm Grip – Fits Olympic Weights","category":"EZ Curl Bar","description":"\n\n28 mm EZ curl shaft: Improve wrist comfort and support grip changes to target biceps and forearms.\n\n400 lb capacity: Withstand progressive loading to build stronger biceps and forearms through heavy sets.\n\n48 in length, 34 in between sleeves: Provide compact control to perform curls and triceps extensions in home gyms.\n\n6.25 in loadable sleeves, fits 2 in plates: Expand weight options and set up progressive biceps and triceps training.\n\nBrass bushings with snap ring: Deliver smooth rotation and keep plates secure to improve curl mechanics.\n\nCarbon steel with black manganese phosphate, chrome sleeves: Resist wear and provide durable support for arm training.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/3675-1.jpg?v=1780592097","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/XM-Landing-Page-Assets-Curl-Barbell-13.jpg?v=1780592098"],"price":98,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:57.346Z"},"share_url":"https://firestarter.network/l/lst_xFcYsSlx","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_xFcYsSlx' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy XMARK - EZ Curl Bar 28 mm Grip – Fits Olympic Weights' and a budget_max comfortably above $98.00 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."]}}