{"type":"firestarter.listing","listing":{"id":"lst_4lN2gwMu","product_name":"Squat Harness - Core-Saber","category":"D-Handles","description":"\n\nRotating axis for natural wrist and arm rotation: The bar spins relative to the nylon pulley strap during exercises — wrists and forearms can rotate naturally through the movement path, preventing the wrist strain that fixed-bar cable rotations cause.\n\n12-inch knurled aluminum bar: Knurled surface provides a secure grip during rotational movements that generate significant torque. Aluminum construction keeps the unit light without sacrificing rigidity.\n\nWorks with bands, cables, and flywheels: Connects via the included nylon pulley strap and carabiner to any resistance source — versatile for home and gym training environments.\n\nSport-specific rotational power training: The rotating axis replicates the biomechanics of swinging, throwing, and rowing in multi-plane patterns — directly applicable to golf, tennis, baseball, and rowing.\n\n120 lb maximum load: Appropriate for rotational training loads where power and speed of movement are more important than maximum resistance.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/IMG-6287.png?v=1780603586","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/IMG-8805.png?v=1780603586","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/resistance-rotation-training-for-athletes.jpg?v=1780603586"],"price":69,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:55.603Z"},"share_url":"https://firestarter.network/l/lst_4lN2gwMu","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_4lN2gwMu' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Squat Harness - Core-Saber' 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."]}}