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FastX402 Currency Converter
x402
FastX402 Currency Converter is a paid API for AI agents from fastx402.tools, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-27).
Converts a specified amount from one ISO 4217 currency to another and returns the exchange rate and converted amount
Price / call$0.003
Success—
StatusUnknown
How this service works
200 pay-per-call tools for AI agents, from $0.001 per request in USDC on Base or Solana with x402. No account, no API key.
Output
A JSON object containing the source currency code (from), target currency code (to), the exchange rate (rate), the original amount, and the converted amount — e.g. {"from":"USD","to":"EUR","rate":0.92,"amount":100,"converted":92}
Example use cases
Travel budget planning in foreign currency
“I'm heading to Japan next month — can you convert 2000 USD to JPY so I know roughly how much spending money I'll have?”
Invoice amount in local currency
“I need to bill a client in Germany for 4500 CAD — what's that in EUR at today's rate?”
Crypto-to-fiat cross-check
“I received 850 GBP from a sale — how much is that in Australian dollars right now?”
Technical details
Endpoint
GEThttps://fastx402.tools/currency-convert?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, no-account, pay-per-call currency conversion with a clear amount, source, and target currency — especially in agent workflows where avoiding API key management is desirable and USDC micropayments via x402 are acceptable. Good for one-off conversions at $0.003 per call.
Side effects
- Invalid or unsupported ISO 4217 currency code returns an error
- Amount provided as zero or negative may be rejected
- Non-numeric or malformed amount string causes a bad request error
- Unsupported currency pair may not have a rate available
- Payment not made or payment failure results in HTTP 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "EUR",
"from": "USD",
"rate": 0.92,
"amount": 100,
"converted": 92
}
}Tags
x402
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