Authentication
Auth type: OAuth 2.0 (client credentials) Register an app in Azure Portal → App registrations. Grant it the following application permissions (not delegated):Chat.ReadWrite, ChannelMessage.Send, OnlineMeetings.ReadWrite, Team.ReadBasic.All, TeamMember.ReadWrite.All. Then grant admin consent.
Triggers
Actions
Messages
Messages
Meetings
Meetings
Team management
Team management

