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FX Rates ECB – Historical Rate Lookup
x402
FX Rates ECB – Historical Rate Lookup is a paid API for AI agents from fx-ecb.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).
Returns the ECB reference exchange rate for a currency pair on a specific past date (since 1999), plus the percentage change from that date to today.
Price / call$0.02
Success—
StatusUnknown
How this service works
ECB reference exchange rate on a past date (since 1999) and the change since then; weekends use the prior working day.
Output
Returns a JSON object with the exact ECB reference exchange rate for the requested currency pair on or before the requested date (adjusted to prior working day for weekends/holidays), the fixing date used, the latest available rate, the percentage change between the historical rate and today's rate, source URL, attribution, and any degraded-mode warnings.
Example use cases
Historical invoice rate reconciliation
“I need the official ECB exchange rate for EUR to GBP on July 10, 2023 — that's the date on an invoice I'm reconciling, and I also want to know how much the rate has moved since then.”
Tracking currency impact since a past event
“What was the ECB reference rate for USD to JPY on January 24, 2020, right before COVID hit, and what's the percentage change from that rate to now?”
Historical FX rate for tax reporting
“For my tax return I need the official ECB exchange rate for CHF to EUR on December 31, 2022 — can you pull that along with how much the pair has shifted since that date?”
Technical details
Endpoint
GEThttps://fx-ecb.x402tookit.com/fx-historical?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need the official ECB reference rate for a specific past date — ideal for accounting, invoice reconciliation, tax reporting, or measuring how much a currency pair has moved since a historical event. It covers all 30 ECB-published currencies dating back to 1999 and returns both the point-in-time rate and the percentage change to the present, which no generic spot-rate endpoint provides.
Side effects
- Unsupported currency pair (only 30 ECB-published currencies available) — returns error or null rate
- Date before 1999 ECB data start — no data available
- Weekend or holiday date — automatically adjusted to prior working day, fixingDate will differ from requestedDate
- Malformed date format (non YYYY-MM-DD) — validation error
- Rate temporarily unavailable due to ECB data feed issues — degraded flag set to true
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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