{"type":"firestarter.listing","listing":{"id":"lst_v03a-N97","product_name":"Replacement Sternum Strap","category":null,"description":"This is a replacement for the standard sternum strap that attaches to the daisy chains on our backpack straps.The sternum strap loops around the daisy chain webbing on our shoulder straps, and should also be compatible with other similar shoulder straps.The maximum length is about 12\" (30.5 cm) from strap to strap and will fit most hikers.We also have a longer sternum strap available.","images":["https://cdn.shopify.com/s/files/1/0004/4652/9572/files/Zpacks-0626-ReplacementSternumStraps-S.webp?v=1783354136"],"price":9.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:40.057Z"},"share_url":"https://firestarter.network/l/lst_v03a-N97","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_v03a-N97' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Replacement Sternum Strap' and a budget_max comfortably above $9.95 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."]}}