{"type":"firestarter.listing","listing":{"id":"lst_6b5_5xAu","product_name":"G4-20 Ultralight 42 Backpack","category":"Backpacks","description":" \n\n\nWe took what made the original “G4” so popular and roped in a gang of new fabrics and materials to create a frameless, do-it-all companion for thru-hikers and weekend warriors.\nThe G4-20 is made for ease on trail. Each buckle, zipper, and cord has been scrutinized for lightweight function. Get ready to meet a simple, cost-effective pack designed to lighten your load.\n\n\n \n ","images":["https://cdn.shopify.com/s/files/1/1300/6549/files/G4-20_Titanium_RF_8c8a40af-71c9-4346-abc3-7f21a6e133c5.jpg?v=1754948144","https://cdn.shopify.com/s/files/1/1300/6549/files/G4-20_Titanium_Rolltop_RF.jpg?v=1711398253","https://cdn.shopify.com/s/files/1/1300/6549/files/G4-20_Titanium_Rolltop_Open.jpg?v=1711398253","https://cdn.shopify.com/s/files/1/1300/6549/files/G4-20_Titanium_Side_49ada257-b162-4942-a94d-e44d5e53273f.jpg?v=1711398253","https://cdn.shopify.com/s/files/1/1300/6549/files/GGSpring24_Carlo_-35.jpg?v=1711425612","https://cdn.shopify.com/s/files/1/1300/6549/files/GGSpring24_Carlo_-39_2.jpg?v=1711425612","https://cdn.shopify.com/s/files/1/1300/6549/files/GG_Spring_Lifestyle-5_1.jpg?v=1711425612"],"price":205,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:36.116Z"},"share_url":"https://firestarter.network/l/lst_6b5_5xAu","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_6b5_5xAu' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy G4-20 Ultralight 42 Backpack' and a budget_max comfortably above $205.00 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."]}}