# Model > See first: [Juju | Model](https://canonical.com/juju/docs/juju-cli/3.6/reference/model/#model) ## Model tag A model tag has the following format: ```text model-/ ``` where `` specifies name of the controller on which the model is running and `` specifies the name of the model. ## Model permission A model permission describes what an entity can do on a model. ### List of model permissions #### `reader` Abilities: Can view the content of a model without changing it. Can use any of the read commands. #### `writer` Abilities: Can deploy and manage applications on the model. #### `administrator` Abilities: Can do anything that it is possible to do at the level of a model.This grants permissions to all resources that inherit from model access.