{"type":"firestarter.listing","listing":{"id":"lst_3CTh-7fk","product_name":"Momentous - Nightly Sleep Stack","category":"Protein Supplements","description":"\n\nMagnesium L-Threonate (Magtein®): Crosses the blood-brain barrier to support healthy cognitive function and calm brain activity before sleep.\n\nApigenin (50mg from grapefruit): Binds GABA receptors in the brain to reduce feelings of stress and promote faster sleep onset.\n\nL-Theanine (200mg): Supports the nervous system by increasing calming neurotransmitter activity for a relaxed pre-sleep state.\n\nThree-ingredient synergy: Targets calming pathways together to support deeper, more consistent sleep night after night.\n\nDeveloped with Dr. Andrew Huberman: Science-backed formulation designed around published sleep and neuroscience research.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/Nightly-Sleep-Stack_2000x2000_09182025_CC.png?v=1780604599"],"price":161.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:56.073Z"},"share_url":"https://firestarter.network/l/lst_3CTh-7fk","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_3CTh-7fk' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Momentous - Nightly Sleep Stack' and a budget_max comfortably above $161.95 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."]}}