Slack User Groups API

Slack's User Groups API lets apps programmatically create and manage user groups (mentionable aliases like @eng or @oncall) in a workspace. It supports creating, renaming, and updating groups and their handles and descriptions; setting default channels; enabling or disabling groups; listing groups; and adding or removing members in bulk. User groups make it easy to notify the right people with a single mention and to auto-add members to specific channels via default channel settings.