Frequently asked questions
Getting started
How do I get an API key?
Create a free account and generate a key from your dashboard. No credit card is required for the Free plan.
How do I authenticate requests?
Pass your key in the URL path (/api/v1/YOUR_KEY/latest) or as an Authorization: Bearer or X-API-Key header.
Which response formats are supported?
JSON by default, plus XML and CSV via the ?format= query parameter. Responses over 1KB are gzip-compressed.
Data & coverage
How many currencies do you cover?
Over 160 world currencies, each with a name, symbol and decimal metadata.
How often are rates updated?
Rates refresh hourly from trusted upstream sources. You can see freshness any time on the status page.
Can I convert between two non-USD currencies?
Yes. Rates are stored against USD and cross-rates are computed automatically, so pairs like GBP→JPY work out of the box.
Do you offer historical and crypto rates?
Yes — historical rates and cryptocurrency prices are available on the Pro plan and above.
Plans & limits
Is there a free plan?
Yes, the Free plan includes 2,500 requests per month with no card required.
What are the rate limits?
Per-minute limits scale with your plan (Free 10, Pro 100, Business/Enterprise 1000). Every response includes X-RateLimit headers.
Can I change plans anytime?
Yes. Changes take effect immediately and your monthly quota adjusts right away.
How do I track my usage?
Your dashboard shows current-month usage, and the /usage and /quota endpoints return it programmatically.
Reliability & support
What happens if I hit my limit?
You receive a 429 response with a Retry-After header. Upgrade your plan for higher limits.
Will my integration break on updates?
No — the legacy, v1 and v2 URLs all keep working. We version the API so you can upgrade on your own schedule.
How do I get help?
Reach us through the contact page; paid plans receive priority support.
Still have a question? Get in touch