{"type":"firestarter.listing","listing":{"id":"lst_bJfDqq3-","product_name":"Sisyphean Stepper - Manual Stair Climber","category":"Cardio Machine","description":"The Manual Stair Climber is the holy grail of cardio machines. It crushes calories, builds endurance, and sculpts your lower body into a work of art.With this compact beast, there’s no need for an outlet. This means you’re free to place this machine anywhere in your home gym, without worrying about tripping over cables. Plus, its shorter frame accommodates a 6-foot tall user with a ceiling height as low as 8.5 feet.The 8 resistance levels let you set the pace for any workout. As for safety, the brake system engages instantly upon releasing the red lever, so you're always in control — even when your legs feel like they're staging a revolt.Can’t get enough of this torture device? Throw on a weight vest. Just keep a towel (and maybe a bucket) nearby because this ain’t for the faint of heart.If your knees can’t handle a revolving-style stair climber (or if you have the coordination of a toddler), check out the Blitz Stepper instead.The Manual Stair Climber will be discontinued, so grab yours while supplies last!IMPORTANT: Always place your foot fully onto each step. Requires a minimum ceiling height of 102 inches for the average user. Ships partially assembled.","images":["https://cdn.shopify.com/s/files/1/0654/3346/9125/files/man-climber-01.jpg?v=1764590874","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/man-climber-02.jpg?v=1764590874","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/man-climber-03.jpg?v=1764590874","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/man-climber-04.jpg?v=1764590874","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/man-climber-05.jpg?v=1764590874","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/man-climber-06.jpg?v=1764590874"],"price":2989.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:45.593Z"},"share_url":"https://firestarter.network/l/lst_bJfDqq3-","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_bJfDqq3-' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Sisyphean Stepper - Manual Stair Climber' and a budget_max comfortably above $2989.99 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."]}}