FX Rates ECB – Currency Pair Change & Volatility

Choose this endpoint when you need statistical context about how a currency pair has moved — not just the current rate, but volatility, range, and trend over a defined window. Ideal for risk assessments, trade briefings, or alerting workflows that need to contextualize today's rate against recent history. Prefer over a simple rate lookup when percent change, volatility, or range position are needed. All data is sourced from official ECB reference rates, making it appropriate for compliance-sensitive or institutional use cases.

• Missing or invalid base/quote currency codes return an error or empty result
• Days parameter outside 7–365 range may be rejected or clamped
• Currency pairs not covered by ECB (non-ECB currencies) will return no data
• Weekends and ECB holidays reduce available fixings, potentially triggering degraded mode
• Network or upstream ECB data outage may return a degraded or partial response