This feature is only available on our Enterprise tier.
Our API now supports querying and updating custom fields. You can use this functionality to do things like bulk update custom fields or populate them with data from adjoining systems. By default, this feature is automatically enabled for customers on the Enterprise tier.
As part of this functionality, we also added the ability to paginate API calls for optimized performance. For API requests that include custom fields, the pagination limit is set to 1000 by default. To return subsequent objects, use startIndex as an offset.
To learn more about how to use our API, see our API Reference.