{"type":"firestarter.listing","listing":{"id":"lst_KnS509z6","product_name":"Shoulder Straps","category":null,"description":"These interchangeable, detachable shoulder straps can be attached to all Zpacks backpacks made in late 2024 or later. Just make sure your old straps have clips at the top if retrofitting an existing pack.These straps include a sternum strap, a pair of tiny oval carabiners to attach them, and a pair of 20\" (51 cm) x 1/2\" webbing that connects the bottom of the straps to your backpack. Load lifter webbing is also included, and is detachable and not needed with our frameless backpacks.Vest straps also include a second sternum strap and a second set of 20\" (51 cm) x 1/2\" webbing w/ D rings which should be looped-on near the corners of your pack.","images":["https://cdn.shopify.com/s/files/1/0004/4652/9572/files/zpacks-vest-straps_d1a4b04e-0b2b-415a-a73b-9b26f7f5e1fd.jpg?v=1764618771","https://cdn.shopify.com/s/files/1/0004/4652/9572/files/zpacks-small-shoulder-straps_2048x_2b52ce22-530f-4a72-94e9-71298334e375.jpg?v=1764618771","https://cdn.shopify.com/s/files/1/0004/4652/9572/files/zpacks-standard-shoulder-straps_2048x_f6e03cac-a372-4ead-89e7-b3c8c9714fab.jpg?v=1764618771","https://cdn.shopify.com/s/files/1/0004/4652/9572/files/zpacks-arc-haul-ultra-EPX-60L-standardstrapsacrosschest-male-frontb.webp?v=1749745794","https://cdn.shopify.com/s/files/1/0004/4652/9572/files/zpacks-arc-haul-ultra-60L-smallstrapsacrosschest-female-frontb_2048x_292da013-ab19-4ae8-ae16-8c97f9bdbddf.png?v=1765553478","https://cdn.shopify.com/s/files/1/0004/4652/9572/files/zpacks-arc-haul-ultra-EPX-60L-veststrapsacrosschest-male-frontb.webp?v=1753471341","https://cdn.shopify.com/s/files/1/0004/4652/9572/files/Zpacks-BackpackOvalCarabiner-1b_e459a32c-007d-4ca1-b395-c7d9c222e03e.webp?v=1765553478","https://cdn.shopify.com/s/files/1/0004/4652/9572/files/Zpacks-FramelessStrapAttachment-2_8f0817a9-2a46-4429-a28b-dcd2531fd51e.webp?v=1759769459"],"price":59.95,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:38.984Z"},"share_url":"https://firestarter.network/l/lst_KnS509z6","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_KnS509z6' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Shoulder Straps' and a budget_max comfortably above $59.95 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."]}}