# Frankfurter > Currency exchange rates and conversion using European Central Bank data. ## Website https://www.frankfurter.app ## Portal https://frankfurter.on.xpay.sh ## MCP Servers ### Frankfurter Currency exchange rates and conversion using ECB data URL: https://frankfurter.mcp.xpay.sh/mcp?key=YOUR_XPAY_KEY Tools: - get_supported_currencies: Returns a list of three-letter currency codes for the supported currencies. ($0.01/call) - get_latest_exchange_rates: Returns the latest exchange rates for specific currencies. The symbols can be used to filter the results to specific currencies. If symbols is not provided, all supported currencies will be returned. ($0.01/call) - convert_currency_latest: Converts an amount from one currency to another using the latest exchange rates. ($0.01/call) - get_historical_exchange_rates: Returns historical exchange rates for a specific date or date range. If the exchange rates for a specified date is not available, the rates available for the closest date before the specified date will be provided. Either a specific date, a start date, or a date range must be provided. The symbols can be used to filter the results to specific currencies. If symbols are not provided, all supported currencies will be returned. ($0.01/call) - convert_currency_specific_date: Convert an amount from one currency to another using the exchange rates for a specific date. If there is no exchange rate available for the specific date, the rate for the closest available date before the specified date will be used. ($0.01/call) - greet: A simple greeting tool to demonstrate middleware functionality. ($0.01/call) ## Get Started 1. Get an API key at https://frankfurter.on.xpay.sh/account/keys 2. Add the MCP server URL to your client config (Claude, Cursor, Windsurf) 3. Pay per tool call from your XPay wallet ## About Powered by XPay — pay-per-use API access for AI agents. https://xpay.sh