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Currency & Crypto Exchange Rate Converter
x402
Currency & Crypto Exchange Rate Converter is a paid API for AI agents from currency.payapi.market, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-30).
Converts a specified amount from one fiat currency to another using ECB rates via Frankfurter, returning the exchange rate and converted result.
Price / call$0.001
Success—
StatusUnknown
How this service works
Fiat exchange rates (ECB via Frankfurter) and crypto prices (CoinGecko) with x402 payments.
Output
A JSON object containing the source currency code, target currency code, the input amount, the exchange rate, the converted result amount, the rate date, and a source attribution string (e.g. 'ECB via Frankfurter').
Example use cases
International invoice payment calculation
“I need to pay a supplier invoice of 2500 euros — how much is that in US dollars at today's ECB rate?”
Travel budget currency planning
“I'm heading to Japan and want to know how much 1000 Australian dollars converts to in Japanese yen right now.”
E-commerce multi-currency pricing
“What's the current exchange rate from USD to Canadian dollars, and how much would 199.99 USD come out to in CAD?”
Technical details
Endpoint
POSThttps://currency.payapi.market/rates/convert?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need programmatic fiat-to-fiat currency conversion backed by ECB official rates, especially in agentic workflows that require micropayment-compatible (x402/USDC) pricing. It is ideal when you want a lightweight, pay-per-call conversion with a structured JSON response including the date and source attribution. Prefer alternatives if you need real-time tick-by-tick forex rates or historical rate series.
Side effects
- Invalid or unsupported ISO 4217 currency code returns an error response
- Missing required fields (from, to, amount) result in a validation error
- Crypto pairs may fail if CoinGecko data is unavailable or the ticker is unrecognized
- Payment failure via x402 protocol if USDC balance is insufficient
- Rate data may be slightly delayed (ECB rates are typically updated on business days)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | Target currency ISO 4217 code, e.g. 'GBP'. |
| from | string | Source currency ISO 4217 code, e.g. 'USD'. |
| amount | number | Amount in the source currency to convert, e.g. 100.0. |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "GBP",
"date": "2024-01-15",
"from": "USD",
"rate": 0.7861,
"amount": 100,
"result": 78.61,
"source": "ECB via Frankfurter"
}
}Tags
x402
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