{"type":"firestarter.listing","listing":{"id":"lst_cDWo2ZBG","product_name":"Vitamin C Serum | Transdermal C Serum by Truth Treatments","category":"Skin Care","description":"Vitamin C Serum with THDA for Visible Brightening and Firmness\nAward-winning. Pharmacist-formulated. Lipid-based.\nTransdermal C Serum is a clinical-grade vitamin C serum formulated with tetrahexyldecyl ascorbate (THDA), a stable, lipid-soluble form of vitamin C designed to support the appearance of firmness, clarity, and even tone.\nFormulated with 100% active and functional ingredients and no water or fillers, it delivers vitamin C in a form your skin can actually use.","images":["https://cdn.shopify.com/s/files/1/1261/4905/files/Transdermal-c-serum-Vitamin-C-anti-aging-moisture_02.jpg?v=1746672726","https://cdn.shopify.com/s/files/1/1261/4905/files/Photo_Transdermal_C_Serum_30ml_Winner_SS_1_5712aac5-80f4-4c64-9d9a-88798c755290.jpg?v=1746672726","https://cdn.shopify.com/s/files/1/1261/4905/files/Transdermal-c-serum-Vitamin-C-anti-aging-moisture_01_1.jpg?v=1746672726","https://cdn.shopify.com/s/files/1/1261/4905/files/Transdermal-c-serum-Vitamin-C-anti-aging-moisture_04.jpg?v=1746672726","https://cdn.shopify.com/s/files/1/1261/4905/files/Transdermal-c-serum-Vitamin-C-anti-aging-moisture_03.jpg?v=1746672726","https://cdn.shopify.com/s/files/1/1261/4905/files/Transdermal-c-serum-Vitamin-C-anti-aging-moisture_05_1600c7bf-1270-453c-aec8-676fa6baadd4.jpg?v=1773227110","https://cdn.shopify.com/s/files/1/1261/4905/products/61grLf78L8L._SL1000.jpg?v=1773227110"],"price":99,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:44:55.332Z"},"share_url":"https://firestarter.network/l/lst_cDWo2ZBG","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_cDWo2ZBG' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Vitamin C Serum | Transdermal C Serum by Truth Treatments' and a budget_max comfortably above $99.00 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."]}}