Bank of Russia vs Exchangerate.dev

This is the Central Bank of the Russian Federation's raw XML data feed, not a modern REST API — it exposes daily and historical official ruble exchange rates alongside adjacent datasets like precious metals prices, interbank rates, deposit rates, and currency swap rates. Requests are parameterized with simple date-range query strings, and the site even ships legacy sample code in Visual Basic and PHP, reflecting its origins as an early-2000s government data service.

Exchangerate.dev is a lean, Frankfurter-compatible FX endpoint aimed at fintech apps, trading tools, and AI agents that want genuinely intraday pricing rather than a once-daily fix: its supported currencies refresh roughly every 60 seconds through the trading week, and every quote is tagged with its source and timestamp so callers can tell a live tick from a stale daily rate. It requires no API key or card to start, positioning itself as a near drop-in replacement for Frankfurter's response shape for teams that need faster-moving data.