All API requests are subjected to API rate limits that exist independently of your API key's monthly usage allowance. We track the rate limits on a 60-seconds basis. For example: if your API is subjected of 10/second rate limit, we'll allow you 600 requests per 60 seconds window.
If you exceed your API limits, you will see the error code of 429. To see more details on this error code, visit Response Codes & Errors section.