{"type":"firestarter.listing","listing":{"id":"lst_SbO21JVi","product_name":"Niacinamide","category":"Ingredient","description":"Meet your skin’s fountain of youth. A water-soluble vitamin, niacinamide is a potent antioxidant with a proven history of skin benefits. Lauded for its ability to strengthen the skin barrier and support regular collagen production, which naturally decreases as the skin ages, the active component of vitamin B3 is a key nutrient in skin health. \nClinical studies have shown that the topical use of niacinamide in all its healing, hydrating, restorative glory can also refine the appearance of pores, soften hyperpigmentation, ease fine lines, and protect against environmental damage that can contribute to premature aging. \nGentle enough for use on sensitive skin and for those with conditions like eczema or psoriasis, this time-stopping vitamin also works to improve our bodies’ synthesis of healthy fats, which contributes further to skin that glows with health and nourishment. \nOur form of niacinamide is encapsulated within The Happy Galaxy’s unique formula for maximum stability, activating only when it comes into contact with the water upon your skin for the highest possible potency at delivery of use.\n\nFeatured in: The Happy Galaxy","images":["https://cdn.shopify.com/s/files/1/0296/7461/files/2021-MLS-Happy-Galaxy1168-2.jpg?v=1762274562","https://cdn.shopify.com/s/files/1/0296/7461/products/Ingredient_thumbnail_components_holder_c8f597c0-537f-4a4b-881f-17920ff16da7.png?v=1722354324"],"price":0,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:44:52.682Z"},"share_url":"https://firestarter.network/l/lst_SbO21JVi","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_SbO21JVi' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Niacinamide' and a budget_max comfortably above $0.00 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."]}}