{"type":"firestarter.listing","listing":{"id":"lst_O0QpLSKX","product_name":"XMARK - Crowbar EZ Curl Barbell, Fits Olympic Plates","category":"EZ Curl Bar","description":"\n\nEZ curl design: Target biceps and forearms with a natural grip to improve wrist comfort and perform strict curls.\n\n400 lb capacity: Withstand progressive loading to build arm strength and support heavy curl and extension sessions.\n\n47 in bar, 33 in between sleeves: Move confidently in tight home gyms, keep setups compact, and perform curls, rows, and triceps work.\n\n6.25 in loadable sleeves, fits 2 in plates: Expand weight options and set up supersets for biceps, triceps, and forearms across curls and extensions.\n\nSolid heat-treated alloy steel with black manganese phosphate and chrome sleeves: Resist corrosion and wear and deliver secure grip and smooth sleeve surfaces to keep finishes intact during frequent training sessions.\n\nBrass bushings with no-maintenance snap ring: Deliver smooth rotation to improve control on curls, triceps extensions, and rows and keep reps consistent.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/CROWBAR-CURL-4.jpg?v=1780592101","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/crowbar-02.jpg?v=1780592102","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/CROWBAR-CURL-2.jpg?v=1780592102","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/CROWBAR-CURL-3.jpg?v=1780592102"],"price":102,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:57.294Z"},"share_url":"https://firestarter.network/l/lst_O0QpLSKX","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_O0QpLSKX' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy XMARK - Crowbar EZ Curl Barbell, Fits Olympic Plates' and a budget_max comfortably above $102.00 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."]}}