{"type":"firestarter.listing","listing":{"id":"lst_OJiu0LX3","product_name":"XMARK - Iron Horse Cast Iron Weight Plate Pairs","category":"Weight Plate","description":"\n\nCast iron construction: Deliver rugged plates that withstand heavy sets and build strength in legs, back, and core.\n\nOlympic 2 in center hole: Ensure a secure bar fit to perform squats, bench, and deadlifts while targeting legs, chest, back.\n\nOld-school design: Provide a straightforward profile to train foundational barbell lifts and strengthen legs, chest, back.\n\nClassic iron sound: Keep training rhythm as you perform compound sets targeting legs, chest, back, and core across heavy sessions.\n\nOlympic plate sizing: Support progressive loading to target legs, chest, back, and core across barbell lifts over time.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/3356-45-P_8e588b6b-e17a-45ec-ae64-e2d816156791.jpg?v=1780592050","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/3356-10-P_066a2d3c-db2a-4992-8760-6a9c57cbae5a.jpg?v=1780592050","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/3356-25-P_51adce39-baab-426d-a1d6-47ed86ce9c3c.jpg?v=1780592050","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/3356-35-P_788c10d5-3284-4276-89f2-79e50d4bf9c7.jpg?v=1780592050","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/3356-BAL-65.jpg?v=1780592050","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/3356-BAL-95.jpg?v=1780592050","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/3356-BAL-115.jpg?v=1780592051","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/3356-BAL-185.jpg?v=1780592050","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/3356-BAL-205.jpg?v=1780592050"],"price":58,"currency":"USD","in_stock":true,"inventory_qty":89991,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:57.319Z"},"share_url":"https://firestarter.network/l/lst_OJiu0LX3","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_OJiu0LX3' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy XMARK - Iron Horse Cast Iron Weight Plate Pairs' and a budget_max comfortably above $58.00 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."]}}