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Currency Exchange by OpenVerbs
x402
Currency Exchange by OpenVerbs is a paid API for AI agents from fx.openverbs.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-14).
Converts an amount from one ISO 4217 currency to another, with optional historical date support
Price / call$0.006
Success—
StatusUnknown
How this service works
Convert an amount from one currency to another using reference rates (latest or a historical date). Amount defaults to 1.
Output
Returns the converted monetary value in the target currency, derived from the source amount and the applicable exchange rate for the requested date (or latest available).
Example use cases
Travel budget estimation in local currency
“I'm traveling to Japan and have $1,200 USD to spend — how much is that in Japanese yen right now?”
Historical invoice reconciliation
“We invoiced a client 5,000 EUR on 2023-09-15. Can you tell me what that was worth in USD on that date?”
Cross-border payroll calculation
“I need to pay a contractor 3,500 Australian dollars — how much is that in British pounds today?”
Technical details
Endpoint
POSThttps://fx.openverbs.com/v1/convertWhen to prefer
Use this endpoint when you need a straightforward, low-latency currency conversion between any two of the 30 supported major world currencies, with optional historical date lookup. Ideal for financial calculations, invoice reconciliation, travel budget estimation, and cross-border payment normalization where a per-call micropayment model ($0.006 USDC) is acceptable. Prefer this over free-tier services when you need reliable, API-native access without rate-limit concerns.
Side effects
- Unsupported currency code passed for 'from' or 'to' — only the 30 listed ISO 4217 codes are accepted
- Invalid date format not matching YYYY-MM-DD pattern
- Amount value of 0 or negative — exclusiveMinimum constraint requires a positive number
- Historical date too far in the past may return no data or stale rates
- Network or payment failure (x402 micropayment not processed)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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