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ECB Currency Rates
x402
ECB Currency Rates is a paid API for AI agents from onchaincheck.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-29).
Returns European Central Bank daily reference exchange rates for ~30 major currencies from any base currency, for the latest date or a specified past date.
Price / call$0.005
Success—
StatusUnknown
How this service works
European Central Bank daily reference exchange rates for about 30 major currencies, from any base currency, latest or for a past date. Rates update once per working day; the response states which day.
Output
A JSON object containing the base currency code, the effective date of the rates, and a map of target currency codes to their exchange rate values relative to the base, plus a source attribution string confirming ECB reference rates.
Example use cases
Historical invoice currency conversion
“What was the official ECB exchange rate from USD to EUR on 2024-03-15? I need to match it for an invoice reconciliation.”
Multi-currency dashboard snapshot
“Pull the latest ECB reference rates for EUR, GBP, CHF, JPY, and CAD all relative to USD so I can update my currency dashboard.”
Travel budget estimation
“What's the current ECB rate for USD to Thai Baht and USD to Japanese Yen? I'm planning trip costs and want official rates.”
Technical details
Endpoint
GEThttps://onchaincheck.dev/fx/rates?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need official, authoritative ECB daily reference rates rather than real-time mid-market or broker rates. Ideal for financial reporting, compliance, invoice reconciliation, or any use case requiring a single official daily rate. Not suitable for intraday trading or real-time tick data needs.
Side effects
- Invalid base currency code (not a 3-letter ISO 4217 code) returns an error
- Requested date falls on a weekend or ECB holiday with no rate available
- Requested date is in the future (no rates published yet)
- Requested target currency not covered by ECB (~30 major currencies only)
- Date format does not match YYYY-MM-DD pattern
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"base": "USD",
"date": "2026-10-22",
"rates": {
"CAD": 1.4034,
"EUR": 0.89246,
"GBP": 0.74761
},
"source": "European Central Bank reference rates via frankfurter.dev"
}
}Tags
x402
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