{"type":"firestarter.listing","listing":{"id":"lst_pNS90rFH","product_name":"XMARK - Black EZ Curl Bar, Fits Olympic Plates","category":"Weight Plate","description":"\n\n2 in Olympic sleeves: Support 2 in plates to train biceps, triceps, and forearms across curls and extensions\n\nAngled camber grips: Improve wrist alignment to target biceps and brachialis while you perform curls and hammer curls\n\nMedium knurling: Provide secure traction to keep your grip during curls, rows, and triceps extensions\n\nSolid steel construction: Withstand repeated training to build biceps and triceps with stable, consistent control\n\nSmooth sleeve rotation: Improve turnover to keep elbows and wrists aligned as you perform curls and rows\n\nBlack protective finish: Resist wear and provide corrosion defense to keep the bar ready for daily training\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/3670.1-BLACK-1.jpg?v=1780592088","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/XM-Landing-Page-Assets-Curl-Barbell-21.jpg?v=1780592090","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/XM-Landing-Page-Assets-Curl-Barbell-22.jpg?v=1780592090","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/XM-Landing-Page-Assets-Curl-Barbell-20.jpg?v=1780592090"],"price":94,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:57.568Z"},"share_url":"https://firestarter.network/l/lst_pNS90rFH","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_pNS90rFH' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy XMARK - Black EZ Curl Bar, Fits Olympic Plates' and a budget_max comfortably above $94.00 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."]}}