{"type":"firestarter.listing","listing":{"id":"lst_4vy-cPEs","product_name":"Iron Neck - Ultimate Iron Neck 3.0 Pro Bundle (STAY DRAFT)","category":"Neck Trainer","description":"\n\nIron Neck 3.0 Pro 4-in-1: Train recovery, prevention, posture, and mobility to strengthen neck flexors, extensors, and rotators.\n\nDynamic tension brake: Adjust friction to target rotational strength and range of motion, or set friction-free for rehab to support injury prevention.\n\nAirFit custom fit: Inflatable bladder and interchangeable padding ensure secure head fit to perform 360-degree isometrics across neck muscles.\n\nAlpha Harness Plus: Honeycomb neoprene, thick nylon, and 6 clips provide linear and rotational band work to build neck flexors and extensors.\n\n25 lb band + anchors: Door belt, anchors, 3X front pads, and skull cap set up home or gym stations to train rotation and improve posture.\n\nPremium Access programs: Provide eight Training Lab programs with four phases to improve mobility, posture, and neck strength.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/iron-neck-30-pro-182792.jpg?v=1780585981","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/iron-neck-30-pro-746386.jpg?v=1780585981","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/iron-neck-30-pro-705385.jpg?v=1780585982","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/iron-neck-30-pro-735482.jpg?v=1780585982","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/iron-neck-30-pro-693618.jpg?v=1780585974","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/iron-neck-30-pro-285947.jpg?v=1780585975","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/iron-neck-30-pro-130814.jpg?v=1780585975","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/iron-neck-30-pro-544637.jpg?v=1780585974"],"price":599,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:54.117Z"},"share_url":"https://firestarter.network/l/lst_4vy-cPEs","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_4vy-cPEs' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Iron Neck - Ultimate Iron Neck 3.0 Pro Bundle (STAY DRAFT)' and a budget_max comfortably above $599.00 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."]}}