Talk to the team behind the rates

Yes. The Free plan is free forever, needs no credit card and can call every endpoint except collections. It quotes rates against USD and includes one API key.

Every 30 minutes, on every plan. All plans get the same rates, and if our main data provider is unavailable a backup provider takes over automatically.

More than 170 currencies, each identified by its three-letter ISO 4217 code. The /currency endpoint returns the full list.

Yes, on paid plans. Add ?base=EUR (or any supported code) to the /exchange request, or save a collection with its own base currency.

Every call to any endpoint, including ones that fail with an error such as 404 or 422. Requests turned away because your allowance is used up or your subscription has lapsed don't count. Your allowance resets every month, on monthly and yearly billing alike.

We email you at 80% and again at 100% of your allowance. After that, the API returns 429 until your next monthly allowance starts or you upgrade. Separately, each account can send up to 50 requests per second.

A collection is a saved set of currencies with its own base currency and markup percentage, so you can fetch just the rates you need in one request. Collections are available on paid plans.

You don't need one. Every endpoint is a plain HTTPS GET request that returns JSON, and the docs include copy-and-paste examples in curl, Node.js and Python.

Not at the moment. The API returns the latest rates, refreshed every 30 minutes. If you need a history, store the responses on your side.

Yes, from your dashboard. Upgrades start right away and you pay the prorated difference. Downgrades take effect when your current period ends. Yearly billing includes free months compared with paying monthly.