{"type":"firestarter.listing","listing":{"id":"lst_9rV7cHXX","product_name":"E3 Energy Cubes - Peanut Butter & Chocolate Protein Bars (12 bars)","category":"Protein Supplements","description":"\n\nRich peanut butter and chocolate in a refrigerated, high-fiber bar: Egg white protein and grass-fed hydrolyzed collagen peptides -- unique 3-cube portioning system for flexible serving sizes.\n\nPrebiotic fiber for sustained energy: Nearly half your daily fiber per pack -- clean, sustained energy without the blood sugar spike.\n12 bars per pack.\n\nProtein base: Egg white protein + grass-fed collagen peptides + organic peanut butter + Mct oil + prebiotic fiber.\n\nClean formula: Gluten-free, dairy-free, soy-free, non-Gmo. No sugar alcohols, no caffeine, no artificial preservatives.\n\nContains: Peanuts, Eggs. Keep refrigerated.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/PB_Pastel_WBENC-2023.png?v=1780603379","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/E3-PB-Chocolate-Cubes.jpg?v=1780603377","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/E3-PB-Chocolate-Box.jpg?v=1780603377","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/PB_Chocolate_Cubes_-_Nutrition_Label_1.png?v=1780603378"],"price":39.96,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:55.110Z"},"share_url":"https://firestarter.network/l/lst_9rV7cHXX","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_9rV7cHXX' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy E3 Energy Cubes - Peanut Butter & Chocolate Protein Bars (12 bars)' and a budget_max comfortably above $39.96 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."]}}