An instances AuditTrail is a collection of records that catalogs the actions taken within an instance. e.g. Creating, Publishing, Deleting a content item. This provides insight into how or why a peice of content is in a specific state.
AuditTrail entries can only be retrived. Creation is reserved for internal Zesty.io usage, which is done at the individual API endpoint. Deletion and updating do not exist, as this acts as an immutable record of the actions taken in an instance.