| `default_projects_limit` | integer | no | Project limit per user. Default is `100000` |
| `admin_notification_email` | string | no | Abuse reports will be sent to this address if it is set. Abuse reports are always available in the admin area. |
| `signup_enabled` | boolean | no | Enable registration. Default is `true`. |
| `after_sign_out_path` | string | no | Where to redirect users after logout |
| `password_authentication_enabled` | boolean | no | Enable authentication via a GitLab account password. Default is `true`. |
| `after_sign_up_text` | string | no | Text shown to the user after signing up |
| `gravatar_enabled` | boolean | no | Enable Gravatar |
| `akismet_api_key` | string | no | API key for akismet spam protection |
| `sign_in_text` | string | no | Text on login page |
| `akismet_enabled` | boolean | no | Enable or disable akismet spam protection |
| `home_page_url` | string | no | Redirect to this URL when not logged in |
| `clientside_sentry_dsn` | string | no | Required if `clientside_sentry_dsn` is enabled |
| `default_branch_protection` | integer | no | Determine if developers can push to master. Can take `0` _(not protected, both developers and masters can push new commits, force push or delete the branch)_, `1` _(partially protected, developers can push new commits, but cannot force push or delete the branch, masters can do anything)_ or `2` _(fully protected, developers cannot push new commits, force push or delete the branch, masters can do anything)_ as a parameter. Default is `2`. |
| `clientside_sentry_enabled` | boolean | no | Enable Sentry error reporting for the client side |
| `restricted_visibility_levels` | array of strings | no | Selected levels cannot be used by non-admin users for projects or snippets. Can take `private`, `internal` and `public` as a parameter. Default is null which means there is no restriction. |
| `container_registry_token_expire_delay` | integer | no | Container Registry token duration in minutes |
| `max_attachment_size` | integer | no | Limit attachment size in MB |
| `default_artifacts_expire_in` | string | no | Set the default expiration time for each job's artifacts |
| `session_expire_delay` | integer | no | Session duration in minutes. GitLab restart is required to apply changes |
| `default_branch_protection` | integer | no | Determine if developers can push to master. Can take `0` _(not protected, both developers and masters can push new commits, force push or delete the branch)_, `1` _(partially protected, developers can push new commits, but cannot force push or delete the branch, masters can do anything)_ or `2` _(fully protected, developers cannot push new commits, force push or delete the branch, masters can do anything)_ as a parameter. Default is `2`. |
| `default_project_visibility` | string | no | What visibility level new projects receive. Can take `private`, `internal` and `public` as a parameter. Default is `private`.|
| `default_group_visibility` | string | no | What visibility level new groups receive. Can take `private`, `internal` and `public` as a parameter. Default is `private`. |
| `default_snippet_visibility` | string | no | What visibility level new snippets receive. Can take `private`, `internal` and `public` as a parameter. Default is `private`.|
| `default_project_visibility` | string | no | What visibility level new projects receive. Can take `private`, `internal` and `public` as a parameter. Default is `private`. |
| `default_group_visibility` | string | no | What visibility level new groups receive. Can take `private`, `internal` and `public` as a parameter. Default is `private`.|
| `default_projects_limit` | integer | no | Project limit per user. Default is `100000` |
| `domain_whitelist` | array of strings | no | Force people to use only corporate emails for sign-up. Default is null, meaning there is no restriction. |
| `default_snippet_visibility` | string | no | What visibility level new snippets receive. Can take `private`, `internal` and `public` as a parameter. Default is `private`. |
| `domain_blacklist_enabled` | boolean | no | Enable/disable the `domain_blacklist` |
| `disabled_oauth_sign_in_sources` | Array of strings | no | Disabled OAuth sign-in sources |
| `domain_blacklist` | array of strings | yes (if `domain_blacklist_enabled` is `true`) | People trying to sign-up with emails from this domain will not be allowed to do so. |
| `domain_blacklist_enabled` | boolean | no | Enable/disable the `domain_blacklist` |
| `user_oauth_applications` | boolean | no | Allow users to register any application to use GitLab as an OAuth provider |
| `domain_blacklist` | array of strings | yes (if `domain_blacklist_enabled` is `true`) | People trying to sign-up with emails from this domain will not be allowed to do so. |
| `after_sign_out_path` | string | no | Where to redirect users after logout |
| `domain_whitelist` | array of strings | no | Force people to use only corporate emails for sign-up. Default is null, meaning there is no restriction. |
| `container_registry_token_expire_delay` | integer | no | Container Registry token duration in minutes |
| `dsa_key_restriction` | integer | no | The minimum allowed bit length of an uploaded DSA key. Default is `0` (no restriction). `-1` disables DSA keys. |
| `repository_storages` | array of strings | no | A list of names of enabled storage paths, taken from `gitlab.yml`. New projects will be created in one of these stores, chosen at random. |
| `ecdsa_key_restriction` | integer | no | The minimum allowed curve size (in bits) of an uploaded ECDSA key. Default is `0` (no restriction). `-1` disables ECDSA keys. |
| `enabled_git_access_protocol` | string | no | Enabled protocols for Git access. Allowed values are: `ssh`, `http`, and `nil` to allow both protocols. |
| `ed25519_key_restriction` | integer | no | The minimum allowed curve size (in bits) of an uploaded ED25519 key. Default is `0` (no restriction). `-1` disables ED25519 keys. |
| `koding_enabled` | boolean | no | Enable Koding integration. Default is `false`. |
| `email_author_in_body` | boolean | no | Some email servers do not support overriding the email sender name. Enable this option to include the name of the author of the issue, merge request or comment in the email body instead. |
| `koding_url` | string | yes (if `koding_enabled` is `true`) | The Koding instance URL for integration. |
| `enabled_git_access_protocol` | string | no | Enabled protocols for Git access. Allowed values are: `ssh`, `http`, and `nil` to allow both protocols. |
| `disabled_oauth_sign_in_sources` | Array of strings | no | Disabled OAuth sign-in sources |
| `gravatar_enabled` | boolean | no | Enable Gravatar |
| `plantuml_enabled` | boolean | no | Enable PlantUML integration. Default is `false`. |
| `help_page_hide_commercial_content` | boolean | no | Hide marketing-related entries from help |
| `plantuml_url` | string | yes (if `plantuml_enabled` is `true`) | The PlantUML instance URL for integration. |
| `help_page_support_url` | string | no | Alternate support URL for help page |
| `terminal_max_session_time` | integer | no | Maximum time for web terminal websocket connection (in seconds). Set to 0 for unlimited time. |
| `home_page_url` | string | no | Redirect to this URL when not logged in |
| `polling_interval_multiplier` | decimal | no | Interval multiplier used by endpoints that perform polling. Set to 0 to disable polling. |
| `rsa_key_restriction` | integer | no | The minimum allowed bit length of an uploaded RSA key. Default is `0` (no restriction). `-1` disables RSA keys.
| `housekeeping_enabled` | boolean | no | Enable or disable git housekeeping |
| `dsa_key_restriction` | integer | no | The minimum allowed bit length of an uploaded DSA key. Default is `0` (no restriction). `-1` disables DSA keys.
| `housekeeping_full_repack_period` | integer | no | Number of Git pushes after which an incremental 'git repack' is run. |
| `ecdsa_key_restriction` | integer | no | The minimum allowed curve size (in bits) of an uploaded ECDSA key. Default is `0` (no restriction). `-1` disables ECDSA keys.
| `housekeeping_gc_period` | integer | no | Number of Git pushes after which 'git gc' is run. |
| `ed25519_key_restriction` | integer | no | The minimum allowed curve size (in bits) of an uploaded ED25519 key. Default is `0` (no restriction). `-1` disables ED25519 keys.
| `housekeeping_incremental_repack_period` | integer | no | Number of Git pushes after which an incremental 'git repack' is run. |
| `html_emails_enabled` | boolean | no | Enable HTML emails |
| `import_sources` | Array of strings | no | Sources to allow project import from, possible values: "github bitbucket gitlab google_code fogbugz git gitlab_project |
| `koding_enabled` | boolean | no | Enable Koding integration. Default is `false`. |
| `koding_url` | string | yes (if `koding_enabled` is `true`) | The Koding instance URL for integration. |
| `max_artifacts_size` | integer | no | Maximum artifacts size in MB |
| `max_attachment_size` | integer | no | Limit attachment size in MB |
| `max_pages_size` | integer | no | Maximum size of pages repositories in MB |
| `metrics_method_call_threshold` | integer | yes (if `metrics_enabled` is `true`) | A method call is only tracked when it takes longer than the given amount of milliseconds |
| `metrics_packet_size` | integer | yes (if `metrics_enabled` is `true`) | The amount of datapoints to send in a single UDP packet. |
| `metrics_pool_size` | integer | yes (if `metrics_enabled` is `true`) | The amount of InfluxDB connections to keep open |
| `metrics_port` | integer | no | The UDP port to use for connecting to InfluxDB |
| `metrics_sample_interval` | integer | yes (if `metrics_enabled` is `true`) | The sampling interval in seconds. |
| `metrics_timeout` | integer | yes (if `metrics_enabled` is `true`) | The amount of seconds after which InfluxDB will time out. |
| `password_authentication_enabled` | boolean | no | Enable authentication via a GitLab account password. Default is `true`. |
| `performance_bar_allowed_group_id` | string | no | The group that is allowed to enable the performance bar |
| `performance_bar_enabled` | boolean | no | Allow enabling the performance bar |
| `plantuml_enabled` | boolean | no | Enable PlantUML integration. Default is `false`. |
| `plantuml_url` | string | yes (if `plantuml_enabled` is `true`) | The PlantUML instance URL for integration. |
| `polling_interval_multiplier` | decimal | no | Interval multiplier used by endpoints that perform polling. Set to 0 to disable polling. |
| `recaptcha_enabled` | boolean | no | Enable recaptcha |
| `recaptcha_private_key` | string | yes (if `recaptcha_enabled` is true) | Private key for recaptcha |
| `recaptcha_site_key` | string | yes (if `recaptcha_enabled` is true) | Site key for recaptcha |
| `repository_checks_enabled` | boolean | no | GitLab will periodically run 'git fsck' in all project and wiki repositories to look for silent disk corruption issues. |
| `repository_storages` | array of strings | no | A list of names of enabled storage paths, taken from `gitlab.yml`. New projects will be created in one of these stores, chosen at random. |
| `require_two_factor_authentication` | boolean | no | Require all users to setup Two-factor authentication |
| `restricted_visibility_levels` | array of strings | no | Selected levels cannot be used by non-admin users for projects or snippets. Can take `private`, `internal` and `public` as a parameter. Default is null which means there is no restriction. |
| `rsa_key_restriction` | integer | no | The minimum allowed bit length of an uploaded RSA key. Default is `0` (no restriction). `-1` disables RSA keys. |
| `send_user_confirmation_email` | boolean | no | Send confirmation email on sign-up |
| `sentry_dsn` | string | yes (if `sentry_enabled` is true) | Sentry Data Source Name |
| `sentry_enabled` | boolean | no | Sentry is an error reporting and logging tool which is currently not shipped with GitLab, get it here: https://getsentry.com |
| `session_expire_delay` | integer | no | Session duration in minutes. GitLab restart is required to apply changes |
| `shared_runners_enabled` | true | no | Enable shared runners for new projects |
| `shared_runners_text` | string | no | Shared runners text |
| `sidekiq_throttling_factor` | decimal | yes (if `sidekiq_throttling_enabled` is true) | The factor by which the queues should be throttled. A value between 0.0 and 1.0, exclusive. |
| `sidekiq_throttling_queues` | array of strings | yes (if `sidekiq_throttling_enabled` is true) | Choose which queues you wish to throttle |
| `sign_in_text` | string | no | Text on login page |
| `signup_enabled` | boolean | no | Enable registration. Default is `true`. |
| `terminal_max_session_time` | integer | no | Maximum time for web terminal websocket connection (in seconds). Set to 0 for unlimited time. |
| `two_factor_grace_period` | integer | no | Amount of time (in hours) that users are allowed to skip forced configuration of two-factor authentication |
| `unique_ips_limit_enabled` | boolean | no | Limit sign in from multiple ips |
| `unique_ips_limit_per_user` | integer | yes (if `unique_ips_limit_enabled` is true) | Maximum number of ips per user |
| `unique_ips_limit_time_window` | integer | yes (if `unique_ips_limit_enabled` is true) | How many seconds an IP will be counted towards the limit |
| `usage_ping_enabled` | boolean | no | Every week GitLab will report license usage back to GitLab, Inc. |
| `user_default_external` | boolean | no | Newly registered users will by default be external |
| `user_oauth_applications` | boolean | no | Allow users to register any application to use GitLab as an OAuth provider |
| `version_check_enabled` | boolean | no | Let GitLab inform you when an update is available. |
```bash
```bash
curl --request PUT --header"PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/application/settings?signup_enabled=false&default_project_visibility=internal
curl --request PUT --header"PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/application/settings?signup_enabled=false&default_project_visibility=internal
