{"type":"firestarter.listing","listing":{"id":"lst_varIwkap","product_name":"Essentiel Progressive Sun Lens","category":"LensAdvizor","description":"No coatings, optional polarization add-on, good for prescriptions up to (+/-3).","images":["https://cdn.shopify.com/s/files/1/0031/6604/4227/files/SUN_Essentiel_TN_e2293e86-9442-4491-8f67-5229c91a1086.jpg?v=1761757506"],"price":209,"currency":"USD","in_stock":true,"inventory_qty":59994,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:40.997Z","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_varIwkap","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_varIwkap' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Essentiel Progressive Sun Lens' and a budget_max comfortably above $209.00 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."]}}