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SiteCheck Crypto Convert
x402
SiteCheck Crypto Convert 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 2026-10-16).
Converts an amount from one cryptocurrency or fiat currency to another using live Coinbase spot rates
Price / call$0.001
Success—
StatusUnknown
How this service works
Convert an amount between a crypto and a fiat currency, or between two crypto assets, at the current spot price: the rate, the converted amount, the pair path used (direct, or through USD) and the time of the rate. Spot prices from Coinbase, Kraken as the fallback. A spot rate, not an executable quote: no fees or slippage. Fiat to fiat is refused; use the FX tool for that. Information only, not financial advice.
Output
A JSON object containing: the 'from' and 'to' currency symbols, the conversion path (e.g. ['BTC-EUR']), the spot exchange rate, the input amount, the converted amount, the data source ('Coinbase spot'), and a timestamp of when the rate was checked. Includes a disclaimer that the rate is informational only, not an executable quote.
Example use cases
Portfolio valuation in fiat
“How much is my 3.2 ETH worth in USD at today's spot rate?”
Cross-crypto swap sizing
“I want to know how much SOL I'd get for 1 BTC at current rates before I decide whether to swap.”
Invoice amount in stablecoins
“I need to bill a client for €500 — how much USDC is that at the current EUR to USDC rate?”
Technical details
Endpoint
GEThttps://api.sitecheck-api.workers.dev/api/crypto/convert?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick indicative spot-rate conversion between crypto and fiat (or crypto-to-crypto) without needing an executable quote or order-book depth. Prefer this over a full DEX swap-quote endpoint when the user only needs to know a value for display, invoicing, or portfolio tracking purposes — not to actually execute a trade. It covers BTC, ETH, SOL, USDC and major fiat currencies via Coinbase spot prices.
Side effects
- Unsupported currency pair returns an error (only BTC, ETH, SOL, USDC and major fiat codes are supported as 'from')
- Invalid or misspelled currency symbol returns a 4xx error
- Amount with more than 12 decimal places may be rejected
- Rate may be stale during Coinbase API outages
- Payment failure (HTTP 402) if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "EUR",
"from": "BTC",
"path": [
"BTC-EUR"
],
"rate": 71845.15,
"amount": 1,
"source": "Coinbase spot (spot, not an executable quote)",
"checkedAt": "2026-10-15T13:40:01.270Z",
"converted": 71845.15,
"disclaimer": "Information only, not financial advice."
}
}Tags
x402
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