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FX Exchange Rate Lookup
x402
FX Exchange Rate Lookup is a paid API for AI agents from x402-canary.nicolas-x402-16f380a7.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).
Returns the current exchange rate between two currencies (base and quote) via a lightweight FX engine.
Price / call$0.01
Success—
StatusUnknown
How this service works
Free need-to-tool routing plus pay-per-call npm docs and TypeScript API signatures, npm breaking-change diffs, JavaScript-rendered browser snapshots and deterministic coding-agent checks via AgentCash/x402.
Output
A JSON object containing the base currency, quote currency, and the current exchange rate as a decimal number, plus metadata indicating the FX engine used (e.g. {"data":{"base":"USD","rate":0.91,"quote":"EUR"},"meta":{"engine":"fx"}}).
Example use cases
Real-time invoice currency conversion
“I'm invoicing a client in Japan — what's the current USD to JPY exchange rate so I can convert my $2,500 invoice?”
Travel budget planning
“I'm heading to the UK next week — what's the current USD to GBP exchange rate so I can figure out how much cash to bring?”
Crypto arbitrage FX baseline
“Can you check the current EUR to CHF exchange rate? I need it as a baseline for a cross-border trade calculation.”
Technical details
Endpoint
POSThttps://x402-canary.nicolas-x402-16f380a7.workers.dev/v1/exchange-rates?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, cheap ($0.01 USDC) programmatic FX rate lookup between two currency pairs without needing historical data, batch conversions, or deep financial analytics. It is well-suited for coding agents that need a lightweight, pay-per-call currency rate within an x402-compatible payment flow.
Side effects
- Unsupported or invalid currency code returns an error response
- Network timeout or worker unavailability returns a 5xx error
- Missing required base or quote parameter may return a validation error
- Payment failure (x402 protocol) may block access if the $0.01 USDC fee is not fulfilled
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| base | string | |
| quote | string |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"base": "USD",
"rate": 0.91,
"quote": "EUR"
},
"meta": {
"engine": "fx"
}
}
}Tags
x402
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