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EU Agent Utils – ECB FX Rate Converter
x402
EU Agent Utils – ECB FX Rate Converter is a paid API for AI agents from eu-agent-utils.frcompanycheck.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).
Converts a currency amount between any two ISO 4217 currencies using official ECB euro reference rates, optionally for a specific historical date.
Price / call$0.002
Success—
StatusUnknown
How this service works
Cheap, deterministic utilities for AI agents, paid per call in USDC with x402 (no account, no API key): ECB euro reference FX rates and conversion, IANA time-zone conversion with explicit DST handling, European public holidays and working-day calculator (FR incl. Alsace-Moselle, BE, LU, DE, AT, IT, ES, PT), offline IBAN validation, and SIREN/SIRET and EU VAT number check-digit validation. Errors are never charged.
Output
Returns a JSON object with the source currency, target currency, date of the rates used, the ECB reference rate, the input amount, the converted result, and the full ECB rates-vs-EUR table used for the computation.
Example use cases
EU invoice currency reconciliation
“I need to convert 12,500 GBP to EUR using the official ECB rate from 2024-09-30 for a cross-border invoice — what's the converted amount and the rate used?”
Real-time travel budget estimate
“How much is 2,000 US dollars in euros at today's ECB reference rate?”
Historical FX rate audit for accounting
“What was the ECB official exchange rate between EUR and SEK on 2023-12-31, and what would 50,000 EUR have been worth in SEK on that date?”
Technical details
Endpoint
GEThttps://eu-agent-utils.frcompanycheck.workers.dev/v1/fx/convert?utm_source=zero.xyzWhen to prefer
Prefer this endpoint when you need deterministic, officially-sourced ECB euro reference rates for European financial calculations, auditing, invoicing, or compliance — especially when you want no account or API key setup overhead and pay per call in USDC. Choose over open market rate APIs when regulatory or accounting accuracy from the ECB source is required.
Side effects
- Unsupported or non-ECB-quoted currency pair returns an error (e.g. exotic currencies not tracked by ECB)
- Date outside ECB data availability (future dates or very old dates) returns an error
- Missing required 'from' or 'to' query parameters returns a validation error
- Errors are not charged — payment only occurs on successful responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "EUR",
"date": "2026-10-09",
"from": "USD",
"rate": 0.89237908,
"amount": 100,
"result": 89.237908,
"ecb_rates_vs_eur": {
"EUR": 1,
"USD": 1.1206
}
}
}Tags
x402
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