# crane auth > Log in or access credentials. > More information: . - Execute `crane auth` subcommand: `crane auth {{subcommand}}` - Implement credential helper: `crane auth get {{registry_address}} {{-h|--help}}` - Log in to a registry: `crane auth login {{registry_address}} {{-h|--help}} {{-p|--password}} {{password}} {{-password-stdin}} {{-u|--username}} {{username}}` - Log out of a registry: `crane auth logout {{registry_address}} {{-h|--help}}` - Retrieve a token for a remote repository: `crane auth token {{registry_address}} {{-H|--header}} {{-h|--help}} {{-m|--mount}} {{scope1 scope2 ...}} --push` - Display help: `crane auth {{-h|--help}}`