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x402 FX Exchange Rate API
x402
x402 FX Exchange Rate API is a paid API for AI agents from x402-api-production-bd43.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Returns the current foreign exchange (FX) rate between two currencies via a micropayment-gated GET endpoint
Price / call$0.01
Success—
StatusUnknown
How this service works
Paid API endpoints for prices, weather, FX, news, gas, dominance, fear/greed, ATH, and more
Output
Returns the current exchange rate value for the specified currency pair (from → to), enabling currency conversion calculations in real time.
Example use cases
International invoice currency conversion
“I'm billing a client in Japan — what's the current USD to JPY exchange rate so I can calculate what to charge them?”
Travel budget planning
“I'm heading to the UK next month — what's the current USD to GBP rate so I can figure out my budget?”
Cross-border crypto settlement check
“Before I settle this payment, can you grab the live EUR to CHF exchange rate for me?”
Technical details
Endpoint
GEThttps://x402-api-production-bd43.up.railway.app/fx?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, real-time FX rate lookup for a specific currency pair and are operating in an x402 micropayment environment. It is well-suited for agents that need to perform currency conversions on-demand without a long-term API subscription, paying only $0.01 USDC per call. Prefer alternatives if you need bulk historical rates, a full currency list, or cannot use the x402 payment protocol.
Side effects
- Invalid or unsupported currency code returns an error or empty result
- Payment failure (402) if USDC micropayment is not completed
- Missing required 'from' or 'to' parameters results in a bad request error
- Network or upstream data provider unavailability may cause timeout or 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | Target currency (e.g. EUR) |
| from | string | Source currency (e.g. USD) |
Tags
x402
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