customerGroups/search

Retrieve customer groups. The list of groups can be filtered to exclude the NOT_LOGGED_IN group using the first parameter and/or it can be filtered by tax class. This call returns an array of objects, but detailed information about each object’s attributes might not be included. See https://devdocs.magento.com/codelinks/attributes.html#GroupRepositoryInterface to determine which call to use to get detailed information about all attributes for an object.