Currency Converter — Fiat & Crypto Cross-Rates

Currency conversion API for AI agents. Convert between fiat currencies (ECB rates) and crypto (CoinGecko rates). Instant cross-rate lookup for USD, EUR, GBP, JPY, BTC, ETH, and 100+ currencies. Tools: finance_convert_currency. Use this for price normalization, international pricing, or cross-currency calculations. Supports both fiat-to-fiat and fiat-to-crypto conversions. Returns: {result, rate, from, to, timestamp}. No API key required — x402 micropayment $0.001/call on Base L2.