{"coverage":{"ES":"station-level","FR":"station-level","IT":"station-level","US":"regional averages (EIA)"},"description":"Machine-payable cheapest-fuel queries. Station-level where governments publish open data (Spain live), official regional averages where only those exist (US via EIA). Optional smart ranking weighs the pump price against the fuel and time you spend on the detour.","disclaimer":"Fuel prices are sourced from official government open data and may be delayed; confirm the price at the pump before purchasing. This is factual reference data, not advice.","examples":["https://fuelscout.scalpstream.com/fuel?country=ES\u0026lat=40.4168\u0026lon=-3.7038\u0026grade=diesel\u0026smart=1","https://fuelscout.scalpstream.com/fuel?country=US\u0026region=CA\u0026grade=diesel"],"grades":["e5","e10","sp98","diesel","diesel_premium","lpg"],"note":"Send a request to the paid endpoint to receive the exact x402 (HTTP 402) quote, then pay to run the query.","paid_endpoint":"https://fuelscout.scalpstream.com/fuel","price":{"per_query":"$0.01 USD-pegged; pay in XRP or RLUSD (XRPL) or USDC on Base/Arbitrum/Polygon"},"service":"FuelScout"}