{"type":"firestarter.listing","listing":{"id":"lst_mWqDFND8","product_name":"Iron neck - Alpha harness plus","category":"Neck Trainer","description":"\n\n4 side clips and 2 hanging clips: Enable linear side-to-side and vertical work to target neck flexors, extensors, and lateral flexors.\n\nUpgraded Honeycomb Neoprene: Cushions and stabilizes the head to keep the fit secure during multi-direction neck training.\n\nUpgraded extra thick nylon: Withstands heavy use and abrasion to deliver long-term durability in the gym or at home.\n\nVertical adjustment strap with reinforced stitching: Set up a precise fit to support safer form while you train flexion and extension.\n\nExtra-heavy D-rings and 2 carabiners: Ensure secure connections for plates or bands so you can train rotation and lateral flexion.\n\nDurable nylon tether for small plates: Provide smooth loading to build neck extensors and flexors with traditional weighted work.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-plus-137498.jpg?v=1780585981","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-plus-750617.jpg?v=1780585982","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-plus-932645.jpg?v=1780585981","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-plus-319918.jpg?v=1780585974","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-plus-149865.jpg?v=1780585982","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-plus-837301.jpg?v=1780585975","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-plus-355500.jpg?v=1780585974","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-plus-200410.jpg?v=1780585974","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-plus-639321.jpg?v=1780585974"],"price":69,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:54.110Z"},"share_url":"https://firestarter.network/l/lst_mWqDFND8","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_mWqDFND8' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Iron neck - Alpha harness plus' and a budget_max comfortably above $69.00 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."]}}