There are standard limits to the number of requests by IP addresses for an API. For a single IP address those requests are limited to 60 / 5 seconds. When the request is exceeded you get a relevant notification – a 429 page is loaded. You should wait till the time limit is restored in order not to get the IP address blocked (it gets blocked for 3 minutes). In case you need to extend that limit, you can use an API token solution. Feel free to contact us directly through Support@Support
Crypto Processing API is used by online retailers, service providers in different kinds of online businesses, including but not limited by banks, medical organizations.