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CelerAPI FX Convert
x402
CelerAPI FX Convert is a paid API for AI agents from www.celerapi.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Converts a monetary amount from one currency to another using live European Central Bank reference exchange rates
Price / call$0.001
Success—
StatusUnknown
How this service works
Resolve companies, legal entities and financial reference data using authoritative sources. Machine-native, pay per request, no subscription.
Output
A JSON object containing the converted amount and related exchange rate data, sourced live from the European Central Bank via Frankfurter. The response includes a 'data' object with conversion results, a 'success' boolean, a 'complete' flag, any warnings, and full provenance metadata including the source (ECB reference rates), license, provider name (frankfurter), freshness indicator, and source URL.
Example use cases
Invoice currency conversion for freelancer
“I need to bill a client in Germany — convert 1200 USD to EUR at today's rate so I know what to put on the invoice.”
Travel budget planning in foreign currency
“I'm heading to Japan next month — how much is 2000 British pounds in Japanese yen right now?”
Cross-border e-commerce pricing
“I'm listing products in my Canadian store — convert 49.99 USD to CAD using the current exchange rate.”
Technical details
Endpoint
GEThttps://www.celerapi.com/v1/fx/convertWhen to prefer
Choose this endpoint when you need live, authoritative ECB-sourced FX rates with provenance metadata, at minimal cost ($0.001 USDC per call) and with no API key or subscription required. Prefer it over generic currency APIs when ECB reference rates are acceptable (business/official use cases) and when you need machine-readable structured output with full license and freshness transparency. Not ideal for retail FX rates that include bank spreads or for real-time trading where millisecond precision matters.
Side effects
- Unsupported or invalid currency codes return an error or empty data
- ECB reference rates may not be available on weekends/holidays, potentially returning stale or incomplete data
- Network or upstream Frankfurter API unavailability causes failure
- Missing required query parameters (source, target, or amount) result in a bad request error
- Exotic or minor currency pairs not covered by ECB may not be supported
Output
Schema · Response
{
"type": "json",
"example": {
"data": {},
"success": true,
"complete": true,
"warnings": [],
"provenance": {
"source": "European Central Bank reference rates via Frankfurter",
"license": "Frankfurter MIT; underlying ECB terms apply",
"provider": "frankfurter",
"freshness": "live",
"source_url": "https://api.frankfurter.dev"
}
}
}Tags
x402
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