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Toll402 FX Rate (ECB Reference Rates)
x402
Toll402 FX Rate (ECB Reference Rates) is a paid API for AI agents from toll402.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Returns the ECB reference exchange rate between two ISO 4217 currencies, optionally converting a specific amount.
Price / call$0.001
Success—
StatusUnknown
How this service works
Exchange rate between two ISO currencies (ECB reference rates), optionally converting an amount. (GET: pass the input as query parameters)
Output
Returns a JSON object with the base currency, quote currency, the ECB reference rate (a floating-point number), the date the rate was published, the requested amount, and the converted amount. Also includes response time in milliseconds and an ok status flag.
Example use cases
Travel budget currency conversion
“I'm heading to Japan and have 2000 USD saved — how much is that in JPY using the current ECB reference rate?”
Invoice multi-currency pricing
“What's today's ECB rate from EUR to GBP? I need to convert a 5000 EUR invoice into pounds for a UK client.”
Cross-currency financial reporting
“Get me the current ECB reference exchange rates for USD, GBP, and CHF all quoted against EUR so I can update our monthly report.”
Technical details
Endpoint
GEThttps://toll402.dev/v1/fxWhen to prefer
Choose this endpoint when you need official, authoritative ECB reference exchange rates rather than real-time market rates. Ideal for financial reporting, invoicing, regulatory compliance, or any use case that requires the European Central Bank's published daily rates. Not suitable if you need live mid-market or interbank rates updated intraday.
Side effects
- Invalid or unsupported ISO 4217 currency code returns an error
- ECB may not publish rates for all currency pairs (e.g. exotic currencies)
- If the ECB has not yet published today's rate, yesterday's rate may be returned
- Network or upstream ECB data unavailability may cause failures
- Passing a non-3-letter string for base or quote will fail schema validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"base": "USD",
"date": "2026-09-05",
"rate": 18.42,
"quote": "MXN",
"amount": 100,
"converted": 1842
}
}Tags
x402
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