{"name":"exchange-rates","description":"FX rates / forex / currency converter / USD to EUR / ECB rates / historical exchange rates. Returns the latest or any historical day's exchange rates between currencies, sourced from the European Central Bank via the public Frankfurter API. Specify a base currency (default USD), an optional quote currency or list, an optional date (YYYY-MM-DD or 'latest'), and an optional amount to also receive a converted value when a single quote is supplied. No auth, commercial-OK.","price":"$0.002","method":"POST","input_schema":{"properties":{"base":{"type":"string","description":"ISO 4217 base currency code (e.g. 'USD', 'EUR'). Default 'USD'."},"quote":{"description":"Single ISO 4217 quote currency, or array of codes. Omit for all available rates."},"date":{"type":"string","description":"'latest' (default) or a historical date in YYYY-MM-DD format."},"amount":{"type":"number","description":"Optional amount in the base currency. When a single quote is supplied, the response includes the converted amount."}},"required":[]},"input_example":{"base":"USD","quote":["EUR","GBP","JPY"],"amount":100},"output_example":{"base":"USD","date":"2026-05-06","rates":{"EUR":0.92,"GBP":0.79,"JPY":154.21},"source":"https://api.frankfurter.dev"},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}