Advanced Custom Fields Exposes Advanced Custom Fields Endpoints in the WordPress REST API. OverviewExposes Advanced Custom Fields Endpoints in the WordPress REST API. FunctionsUpdate Custom Content Type ACF Field ValuesList Custom Content Type ACF FieldsList Page ACF FieldsList Post ACF FieldsList Taxonomy ACF FieldsRetrieve Custom Content Type ACF FieldsRetrieve Page ACF FieldsRetrieve Post ACF FieldsRetrieve Taxonomy ACF FieldsUpdate Taxonomy ACF Field Values