{"type":"firestarter.listing","listing":{"id":"lst_285Lgcdu","product_name":"Essentiel Single Vision Optical Lens","category":"LensAdvizor","description":"No coatings, optional blue light add-on, good for prescriptions up to (+/-3).","images":["https://cdn.shopify.com/s/files/1/0031/6604/4227/files/OPT_Essentiel_TN.jpg?v=1761693630","https://cdn.shopify.com/s/files/1/0031/6604/4227/files/essential-lens-photo_52a10ede-2217-4d9c-bdad-a2dc053ef2be.png?v=1760631958"],"price":109,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:40.934Z","product_rating":null,"product_rating_count":0,"seller_rating":null,"seller_rating_count":0,"units_sold":0,"reviews":{"count":0,"top":[]},"videos":[]},"share_url":"https://firestarter.network/l/lst_285Lgcdu","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_285Lgcdu' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Essentiel Single Vision Optical Lens' and a budget_max comfortably above $109.00 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."]}}