The Simple API serves to make data from your event file accessible through a static link without logging in to your customer account, this may be to publish results on another website.
Settings can be accessed through Basic Settings ⇒ Access Rights/Simple API. Simply select what type of data you would like to make accessible and then select the list name or enter the setting name. The details for each API type are below.

The icon in the column Link then leads to the static link.
When calling APIs you should consider that they will be cached for between 10-30 seconds, therefore calling them more often may not result in data updating correctly.
The Simple API applies rate limiting of 1 call per second per each unique API URL from each unique address. If your client script is calling an API more than once per second then it will receive a 406 error code. If you require more frequent calls please contact support.