Global prices, one API call.
Our own currency engine β institutional-grade reference rates for fiat, live crypto prices, and custom rates you control. Every response timestamped, no third-party reseller, same API key as your email.
GET /v1/convert?from=USD&to=NGN&amount=100 { "from": "USD", "to": "NGN", "amount": 100, "rate": 1605.0, "result": 160500.0, "as_of": "2026-07-08T09:00:00Z" }
HOW IT WORKS
Market rate in, your rate out.
Pin a spread on any pair and every conversion returns the market rate, your rate and the margin β so fintechs book profit with zero client-side math.
One /convert call returns the market rate, your rate and the exact spread β with a freshness timestamp, no client-side math.
WHY IT'S DIFFERENT
Rates you can build on.
Our own engine
We ingest institutional-grade reference rates for fiat and a live market feed for crypto, then compute every cross-rate ourselves. No third-party reseller in the path.
Fiat + crypto
Major world currencies from daily institutional reference rates, plus top crypto (BTC, ETH, and more) priced in real time.
Freshness you can see
Every response is timestamped. Crypto refreshes every minute; fiat tracks a daily institutional reference β so you always know how current a rate is.
Custom & pinned rates
Set your own rate for any currency β NGN and emerging markets, or a custom spread β per account, without touching the global table.
Audit snapshots
We store the exact rate table on every ingest, so pricing and financial reports stay reproducible.
One API key
The same credential and dashboard as your email β currency is just another product on your account.
THE API
Four endpoints, everything you need.
/v1/rates/:baseCross-rates for a base currency against every supported currency, with a freshness timestamp./v1/convertConvert an amount between any two currencies β each response includes the exact rateAsOf./v1/currency/statusFreshness by asset class β when fiat and crypto rates were last refreshed./v1/currenciesThe live list of supported fiat and crypto currencies.WHAT TEAMS BUILD
From checkout to close of books.
Localized checkout
Show every shopper prices in their own currency and settle in yours β converted at the live rate, with the timestamp on record.
Multi-currency invoicing
Issue invoices in the customer's currency and reconcile with the exact rate snapshot at issue time.
Financial reporting
Normalize revenue from every market into a single reporting currency with auditable rate snapshots.
Wallet & payouts
Price cross-border transfers and payouts with rates you can prove were correct at execution time.
Currency FAQ
How often are rates updated?
It depends on the asset. Fiat rates track daily institutional reference rates (published once per business day). Crypto is refreshed every minute from a live market feed. Every response carries the exact timestamp the rate was last updated, so you always know how fresh it is.
Where do the rates come from?
Our own engine. We ingest institutional-grade reference rates for fiat and a live market feed for crypto, keep a canonical table, and compute every cross-rate ourselves. There's no commercial FX reseller in the path.
Do you support NGN and emerging-market currencies?
Our reference rates cover the major fiats and top crypto out of the box. For NGN and other emerging currencies β or to apply your own spread β you set a custom rate on your account, which we apply to your conversions. Call /v1/currencies for the live list.
Do you store the rate I used?
Yes. We snapshot the exact rate table on every ingest, and every convert/rates response returns the rate plus its timestamp β so your pricing and reports stay reproducible.
How is it billed?
Currency is its own product with its own subscription β but it shares the same API key and dashboard as email. Subscribe to just currency, just email, or both.
Price the whole world correctly.
Add real-time currency conversion with one API key. 10,000 free API calls a month to start.
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