{"type":"firestarter.listing","listing":{"id":"lst_a6RDkU1x","product_name":"Momentous - Magnesium L-Threonate","category":"Sleep Support","description":"\n  \n2g Magtein® per serving (145mg magnesium): The only patented form of magnesium L-threonate clinically shown to cross the blood-brain barrier and elevate brain magnesium levels.\n  \nSleep quality without sedation: Brain magnesium regulates the nervous system signals behind restorative sleep. Replenish it and sleep depth shifts — no melatonin, no morning grogginess.\n  \nCognitive function and memory: Magtein® increases synaptic density and plasticity — key factors for learning, memory retention, and mental clarity.\n  \nCalm without drowsiness: Supports the body's stress response and relaxation mechanisms through magnesium-dependent enzymatic reactions.\n  \nDeveloped at MIT: Magtein® was developed by neuroscientists at the Massachusetts Institute of Technology, including renowned magnesium researcher Dr. Guosong Liu.\n  \nNSF Certified for Sport®: Independently tested for banned substances and label accuracy. Vegan, gluten-free, GMO-free. Take 3 capsules 30–60 minutes before bed.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/V3_Magnesium-L-Threonate-Bottle_2000x2000_07142025.png?v=1780605150","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/Magtein-KeyBenefits.png?v=1780605150","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/Magtein-WhatSetsitApart.png?v=1780605154","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/Sleep5-PDP-Magtein.jpg?v=1780605149","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/V3_Magnesium-Threonate_Supp-Facts_2000x2000_11082024_FINAL.png?v=1780605150"],"price":49.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:54.827Z"},"share_url":"https://firestarter.network/l/lst_a6RDkU1x","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_a6RDkU1x' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Momentous - Magnesium L-Threonate' and a budget_max comfortably above $49.95 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."]}}