diff --git a/.env.example b/.env.example
index d98f7d4b9..1084e9837 100644
--- a/.env.example
+++ b/.env.example
@@ -15,3 +15,32 @@
# Uncomment this to get GitHub comments for the Pull Request Workflow.
# ENABLE_PR_COMMENT=true
+
+# ADMIN_REPO=safe-settings-config
+CONFIG_PATH=.github
+SETTINGS_FILE_PATH=settings.yml
+
+# URL prefix for deployment behind a proxy (appears in browser address bar)
+# Default: /safe-settings
+# Set to empty string for root path deployment: SAFE_SETTINGS_HUB_URL_PREFIX=
+# SAFE_SETTINGS_HUB_URL_PREFIX=/safe-settings
+
+# Configuration support for Hub-Sync safe-settings feature
+# SAFE_SETTINGS_HUB_REPO=safe-settings-config-master
+# SAFE_SETTINGS_HUB_ORG=foo-training
+# A subfolder under 'CONFIG_PATH' where the 'organizations/
external_group string
Optional. The display name of an external IdP group (as listed under your organization's external groups) to link to the team. safe-settings looks up the group's id by display name via GET /orgs/{org}/external-groups and links the team via PATCH /orgs/{org}/teams/{team_slug}/external-groups. The link is reconciled on every sync and is idempotent (it skips the PATCH when the team is already linked to the same group). The external-groups list is fetched at most once per org per sync, only when at least one team entry uses this property. If the named group does not exist for the org, an error is logged and the team-repo association still applies.