{"type":"firestarter.listing","listing":{"id":"lst_LM7l-ZUX","product_name":"Titanium Pen Refill Cartridges (3 Pack)","category":"Accessories : Resale Accessories","description":"A three-pack of refill cartridges for the Titanium Trail Pen. Each cartridge weighs about 1 gram and is 3 inches (7.6 cm) long.","images":["https://cdn.shopify.com/s/files/1/0004/4652/9572/files/Zpacks-0526-TitaniumPenRefillCartridges-3.webp?v=1779470801","https://cdn.shopify.com/s/files/1/0004/4652/9572/files/Zpacks-0526-TitaniumPenRefillCartridges-1.webp?v=1779470801"],"price":4.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:38.384Z"},"share_url":"https://firestarter.network/l/lst_LM7l-ZUX","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_LM7l-ZUX' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Titanium Pen Refill Cartridges (3 Pack)' and a budget_max comfortably above $4.95 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."]}}