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x402.onchainexpat.com Fiat Currency Converter
x402
x402.onchainexpat.com Fiat Currency Converter is a paid API for AI agents from x402.onchainexpat.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Converts fiat currency amounts between world currencies (USD, EUR, GBP, etc.) using current exchange rates
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-request AI, crypto, proxy, and utility APIs using x402 protocol
Output
Returns the converted amount in the target currency along with the exchange rate used, given a source currency, target currency, and input amount.
Example use cases
Calculate international payroll in local currencies
“I need to pay team members in different countries. Convert 5000 USD to EUR for our Berlin office, GBP for London, and JPY for Tokyo so I know exactly what each person receives.”
Budget travel expenses across multiple countries
“I'm planning a month-long trip through Europe. Can you convert my 3000 dollar budget into euros, British pounds, and Swiss francs so I know how much I can spend in each country?”
Compare pricing for global vendor invoices
“We have invoices from three suppliers: one requesting 10000 EUR, another 8500 GBP, and a third 1200000 INR. Convert all of them to USD so I can see which vendor is actually the cheapest.”
Technical details
Endpoint
POSThttps://x402.onchainexpat.com/api/x402-tools/currency/convertWhen to prefer
Use this endpoint when you need fiat-to-fiat currency conversion (e.g., USD to EUR, GBP to JPY). Do NOT use this for cryptocurrency price lookups — the sibling /crypto/price endpoint handles crypto. Prefer this over generic FX APIs when you are already operating in a Web3/x402 payment context.
Side effects
- Unsupported currency code returns an error
- Invalid or negative amount causes a validation error
- Missing required fields (source, target, amount) returns a 400 error
- Payment failure or insufficient USDC balance blocks the request
- Exchange rate data unavailable for exotic currency pairs
Input
{
"input": {
"body": {
"to": "EUR",
"from": "USD",
"amount": 100
},
"type": "http",
"bodyType": "json"
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | Target currency code (default 'EUR'). Aliases: 'to_currency', 'toCurrency', 'target' |
| from | string | Source currency code (default 'USD'). Aliases: 'from_currency', 'fromCurrency', 'source' |
| amount | number | Amount to convert (default 1). Aliases: 'fromAmount', 'value' |
Output
{
"to": "EUR",
"from": "USD",
"rate": 0.8598,
"amount": 100,
"cached": false,
"converted": 85.98,
"last_updated": "Wed, 03 Jun 2026 00:00:01 +0000"
}Schema · Response
| Field | Type | Description |
|---|---|---|
| to | string | |
| from | string | |
| rate | number | |
| amount | number | |
| cached | boolean | |
| result | number |
Tags
x402
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