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SiteCheck FX Exchange Rates
x402
SiteCheck FX Exchange Rates is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).
Returns current or historical foreign exchange rates and currency conversions using European Central Bank reference data
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call tools for AI agents: image generation, speech-to-text, text-to-speech, embeddings, LLM chat, website audits and contact enrichment, web page to Markdown reader, PDF to text, sitemap URLs, tech stack detection, translation, exchange rates, e-mail pre-check, domain RDAP/DNS lookup, Solana token checks, trending tokens and wallet holdings, plus business and compliance data (EU VAT/VIES, IBAN, LEI/GLEIF, US recalls, OSHA/EPA violations, UK insolvency notices). Plus prediction-market search, briefs, quotes and unsigned buy transactions, powered by Panta. Payment: x402, USDC on Base, Solana or Arc. No signup, no API key.
Output
A JSON object containing the base currency, date, a map of target currency codes to exchange rates, the requested amount, the data source (European Central Bank via Frankfurter), and a converted amounts map showing the base amount expressed in each target currency.
Example use cases
Real-time invoice currency conversion
“I need to convert 5000 USD into euros and British pounds using today's ECB reference rates — can you give me the converted amounts?”
Historical rate lookup for accounting
“What was the exchange rate from EUR to USD and JPY on March 15th, 2024? I need the exact ECB reference rate for that date.”
Time series rate analysis
“Can you fetch the USD to CHF and SEK exchange rates every day from January 1st to January 31st 2025 so I can see how they trended?”
Technical details
Endpoint
GEThttps://api.sitecheck-api.workers.dev/api/fx?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need lightweight, pay-per-call currency conversion or FX rate lookup without requiring a subscription or API key. It is ideal for agents that occasionally need exchange rates without committing to a dedicated FX API. It uses ECB reference rates which are authoritative for EUR-based conversions. Prefer alternatives if you need real-time intraday tick data, crypto-to-fiat rates, or rates from a non-ECB source.
Side effects
- Unsupported currency code returns an error or missing rate
- Future dates return an error (only historical and current dates supported)
- Weekend/holiday dates may return the most recent prior business day's rates
- Very old historical dates outside ECB coverage window may fail
- Network timeout from the upstream Frankfurter/ECB data source
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"base": "USD",
"date": "2026-10-08",
"rates": {
"EUR": 0.89397,
"GBP": 0.7612,
"TRY": 49.215
},
"amount": 250,
"source": "European Central Bank reference rates via Frankfurter (https://frankfurter.dev)",
"converted": {
"EUR": 223.4925,
"GBP": 190.3,
"TRY": 12303.75
}
}
}Tags
x402
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