API usage is limited to 2000 calls per hour, and requires the creation of an API user. You can create API users by logging into your account and going to the My account area. Please note that these APIs always use UTC dates and times.
We recommend using version 2.0 of the API as it contains the most recent functionality. However, if you need to use the older version, the SOAP-only API v1.0 is still available.
API version 1 (SOAP only).