| Name | Type | Description |
| authenticate | bool? | Force authentication for request (default: false) |
| limit | int? | Maximum number of items to retrieve. Actual maximum is capped by site setting. |
| format | string? | Output format: autocomplete,default,verbose |
| groupid | uint? | Search for users in a specific group |
| seated | bool? | Search for users with or without seats |
| active | bool? | Search for users by their active status |
| authprovider | int? | Return users belonging to given authentication service id |
| fullname | string? | Search for users full name starting with supplied text |
| username | string? | Search for users name starting with supplied text |
| email | string? | Search for users by name and email or part of a name and email |
