{"type":"firestarter.listing","listing":{"id":"lst_us3KHbuG","product_name":"Medium-Plus Stuff Sack","category":"Accessories","description":"\nThe best Dyneema stuff sacks out there. Stack and fit in the Arc Blast like a dream. Sewn to withstand a beating. Simple, sturdy, and effective draw cord.\n– Curt S., ★★★★★\nArrange your pack the way you like it! Constructed from ultralight Dyneema® Composite Fabric, this stuff sack is great for multiple clothing items or a tent. This size fits well horizontally in most backpacks.\nNeed a different size?  Check out the rest of our Stuff Sack collection.","images":["https://cdn.shopify.com/s/files/1/0004/4652/9572/products/zpacks-medium-plus-stuff-sack.jpg?v=1596650942","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/stuff-sack-medium-plus-olive-l.jpg?v=1596650942","https://cdn.shopify.com/s/files/1/0004/4652/9572/products/stuff-sack-medium-plus-spruce-l.jpg?v=1596650942"],"price":28.95,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:38.963Z"},"share_url":"https://firestarter.network/l/lst_us3KHbuG","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_us3KHbuG' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Medium-Plus Stuff Sack' and a budget_max comfortably above $28.95 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."]}}