The user identifier for the calendar owner. Must be either 'me' (for the authenticated user), a Microsoft 365 User Principal Name (e.g., user@contoso.com), or an Azure AD object ID (GUID).
event_idstring
Required
The unique identifier of the calendar event to add the extension to.
calendar_idstring
Required
The unique identifier of the calendar containing the event.
extension_namestring
Required
The unique name for the extension. Must follow the format 'Com.Company.ExtensionName' (e.g., Com.Contoso.TestExtension).
custom_propertiesobject
Custom properties to store in the extension as key-value pairs. Each property can be a string, number, or boolean value.
Observable output
data
Required
Data from the action execution
errorstring
Error if any occurred during the execution of the action
successfulboolean
Required
Whether or not the action execution was successful or not