matrix.grapheneos.org/webapps/element/config.json

{
    "default_server_config": {
        "m.homeserver": {
            "base_url": "https://matrix.grapheneos.org",
            "server_name": "grapheneos.org"
        }
    },
    "disable_custom_urls": true,
    "disable_guests": true,
    "disable_login_language_selector": false,
    "disable_3pid_login": true,
    "brand": "Element",
    "integrations_ui_url": "",
    "integrations_rest_url": "",
    "integrations_widgets_urls": [],
    "bug_report_endpoint_url": "https://element.io/bugreports/submit",
    "defaultCountryCode": "CA",
    "showLabsSettings": false,
    "features": { },
    "default_federate": true,
    "default_theme": "dark",
    "roomDirectory": {
        "servers": [
            "grapheneos.org",
            "matrix.org"
        ]
    },
    "piwik": false,
    "enable_presence_by_hs_url": {},
    "settingDefaults": {
        "breadcrumbs": true
    },
    "jitsi": {
        "preferredDomain": "jitsi.riot.im"
    }
}