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FX Spot Price Oracle
x402
FX Spot Price Oracle is a paid API for AI agents from hcrb.in, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Returns a real-time foreign exchange spot price for a given currency pair, including the rate, inverse, timestamp, and source.
Price / call$0.01
Success—
StatusUnknown
How this service works
Offline deterministic checks (no ML, no scraping) for business identifiers and rental due-diligence, paid per call via x402 (gasless EIP-3009 USDC on Base). Checksum-verifiable (IBAN, LEI, VAT, ABA, ISBN, SEDOL…) vs format-only (EIN, IFSC, SWIFT/BIC…) — every response returns a scope field. Non-custodial, signed receipts. First 3 calls/day free.
Output
A JSON object containing the currency pair string, the spot rate as a number, the inverse rate, a Unix timestamp of when the price was fetched, and the data source identifier.
Example use cases
Cross-currency payment pricing
“Before I send an international wire, can you pull the live USD to GBP spot rate so I know exactly how much the recipient will get?”
Portfolio valuation in base currency
“I need to convert my EUR holdings to USD for reporting — what's the current EUR/USD spot price and its inverse right now?”
Forex arbitrage signal check
“Grab the live spot prices for USD/JPY and EUR/JPY so I can check whether there's a triangular arbitrage opportunity with EUR/USD.”
Technical details
Endpoint
POSThttps://hcrb.in/v1/tools/fx-spot-price-oracle/call?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call FX spot rate lookup with cryptographic payment receipts (x402/USDC on Base) and no subscription required. Ideal for agents that make infrequent or low-volume FX queries and want verifiable, receipted micropayments rather than a monthly API key billing arrangement. Not suited for tick-by-tick high-frequency trading feeds or historical rate series.
Side effects
- Unsupported or malformed currency pair returns an error or empty result
- Network or oracle downtime may return a stale or unavailable rate
- Payment failure via x402 (insufficient USDC balance) blocks the call
- Rate limiting beyond the 3 free calls/day without payment
- Invalid pair format (e.g. wrong delimiter or unknown ticker) causes rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"required": [
"pair",
"rate",
"inverse",
"timestamp",
"source"
],
"properties": {
"pair": {
"type": "string"
},
"rate": {
"type": "number"
},
"source": {
"type": "string"
},
"inverse": {
"type": "number"
},
"timestamp": {
"type": "number"
}
}
},
"example": {
"valid": true,
"reason": "checksum valid"
}
}Tags
x402
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