{"type":"firestarter.listing","listing":{"id":"lst_8tsQsAkQ","product_name":"Iron Neck - Alpha Harness","category":"Neck Trainer","description":"\n\n4 side clips + 2 hanging clips: Target neck flexors, extensors, and lateral flexors while you train linear side-to-side and up-and-down moves\n\nDesign supports rotations: Perform band-resisted turns to train neck rotators and improve control across full ranges\n\nExtra-heavy D-rings: Provide secure attachment points for weights or bands and withstand rigorous neck training sessions\n\nDurable nylon tether + 2 carabiners: Support small weight plates to build progressive overload and set up reliable loading\n\nFlexible, breathable neoprene: Keep you cool and supported to perform neck flexion, extension, and rotation with steady contact\n\nReinforced stitching + quick fastening strap: Ensure a secure fit, set up fast, and resist wear as you move through side-to-side and up-and-down work\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-179200.jpg?v=1780585974","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-753936.jpg?v=1780585982","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-514107.jpg?v=1780585981","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-706781.jpg?v=1780585981","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/alpha-harness-921047.jpg?v=1780585974"],"price":59,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:54.129Z"},"share_url":"https://firestarter.network/l/lst_8tsQsAkQ","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_8tsQsAkQ' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Iron Neck - Alpha Harness' and a budget_max comfortably above $59.00 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."]}}