Returns the catalog of datasets available for querying via the Datasets API. Each entry includes a machine-readable name (used as the datasetName path parameter in "Get Fields from Dataset (v1.2)" and "Get Data from Dataset (v2)") and a human-readable label. Use this endpoint to discover which datasets the current account has access to before building queries.

Datasets are queryable reporting datasets for the Datasets API. They are not the same as saved custom reports (list-reports), employee tabular table aliases (list-tabular-fields), or account list-field definitions (list-list-fields).

Note: Compared to "List Datasets (v1)", this version returns RFC 7807 application/problem+json error responses and includes an X-Request-ID correlation header.