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PennyRail FX Currency Conversion
x402
PennyRail FX Currency Conversion is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Converts an amount from one currency to another using real-time foreign exchange rates, returning the converted value
Price / call$0.003
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns the converted currency amount based on current FX rates, typically including the resulting value in the target currency and the applicable exchange rate used for the conversion.
Example use cases
International invoice pricing
“I need to bill a client in Japan — convert 1200 USD to JPY at the current rate so I can put the right amount on the invoice.”
Travel budget estimation
“I'm heading to the UK next week with 800 Canadian dollars — how much is that in British pounds right now?”
Cross-border e-commerce checkout
“A customer is checking out and their cart total is 49.99 USD — convert that to Mexican pesos so I can show them the local price.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/network/fx.convert--currency-conversionWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call currency conversion without managing API keys or subscriptions — especially suitable for AI agents making occasional FX conversions as part of a broader workflow, billed via x402 micropayment protocol at $0.003 USDC per call.
Side effects
- Unsupported or unrecognized currency code returns an error
- Missing or malformed input object causes validation failure
- Rate data unavailable for exotic currency pairs
- Service downtime or Vercel cold-start timeout
- Payment of $0.003 USDC required per call; unpaid requests are rejected with HTTP 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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