{"type":"firestarter.listing","listing":{"id":"lst_wSgdgwcG","product_name":"Arc Haul Ultra 40L Backpack (DISC)","category":"Backpacks : Frame : Air Frame","description":"I’m on the Appalachain Trail right now for the last 30 days and am 100% happy so far. Awesome pack. Probably best on trail.\n– John M., ★★★★★\nLong days between resupplies requires a pack designed with ample space and durability. Made from Ultra 100X material, the ultralight Arc Haul Ultra backpack is innovatively designed to be a true workhorse from the Sierras to the Shenandoah.\nComfortably transfer your pack’s weight to your hips with our custom Curved Carbon Fiber frame system. The frame also creates a gap between your back and the pack allowing for air flow that helps keeps you cool.\nFeaturing adjustable shoulder straps, an interchangeable belt, and a variety of optional modular add-ons, the Arc Haul Ultra will allow you to tackle those long days on the trail with a durable ultralight backpack designed to fit you.\n\n\n\n\n\n\n\n\n\n \n\n\n\n\n\n\n\n\n","images":["https://cdn.shopify.com/s/files/1/0004/4652/9572/files/zpacks-archaul-40l-blue.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/zpacks-archaul-40l-04.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/zpacks-archaul-40l-01.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/zpacks-archaul-40l-02.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/zpacks-archaul-40l-05.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/zpacks-archaul-40l-03.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/zpacks-archaulultra50l-03_2048x_bd3e8000-63e0-415a-88e2-3fb64a6c63fe.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/DSC07288-Edit.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/zpacks-archaulultra-back_2048x_4eab050f-d6dc-4819-9659-b82db9fed716.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/49BB3BB5-FCD5-47C9-AC46-65D6B9CBD8CF_1_105_c_2048x_2048x_2048x_ae5c392c-4316-4556-ac1c-db38c77f52c2.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/Zpacks-Arc-Haul-Ultra-Bear-Canister.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/DSC07278-Edit.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/hydrationtube.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/files/zpacks-archaul-40l-blk.jpg?v=1694775147","https://cdn.shopify.com/s/files/1/0004/4652/9572/files/zpacks-archaul-40l-grey.jpg?v=1694775147"],"price":399,"currency":"USD","in_stock":true,"inventory_qty":359964,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:38.418Z"},"share_url":"https://firestarter.network/l/lst_wSgdgwcG","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_wSgdgwcG' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Arc Haul Ultra 40L Backpack (DISC)' and a budget_max comfortably above $399.00 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."]}}