diff --git a/config/permissions/akP-arrstack-prowlarr.yaml b/config/permissions/akP-arrstack-prowlarr.yaml
new file mode 100644
index 0000000..2320348
--- /dev/null
+++ b/config/permissions/akP-arrstack-prowlarr.yaml
@@ -0,0 +1,6 @@
+# Permission group akP-arrstack-prowlarr (name = filename). Per-app entitlement:
+# NOT bound to any application (no `application` field), so it does not gate OIDC.
+# It exists purely to appear in the user's hierarchical `ak_groups` claim, which
+# arrproxy reads (via oauth2-proxy X-Auth-Request-Groups) to decide whether to
+# mint a token allowing the prowlarr backend.
+attributes: {}
diff --git a/config/permissions/akP-arrstack-radarr.yaml b/config/permissions/akP-arrstack-radarr.yaml
new file mode 100644
index 0000000..4d91747
--- /dev/null
+++ b/config/permissions/akP-arrstack-radarr.yaml
@@ -0,0 +1,6 @@
+# Permission group akP-arrstack-radarr (name = filename). Per-app entitlement:
+# NOT bound to any application (no `application` field), so it does not gate OIDC.
+# It exists purely to appear in the user's hierarchical `ak_groups` claim, which
+# arrproxy reads (via oauth2-proxy X-Auth-Request-Groups) to decide whether to
+# mint a token allowing the radarr backend.
+attributes: {}
diff --git a/config/permissions/akP-arrstack-sonarr.yaml b/config/permissions/akP-arrstack-sonarr.yaml
new file mode 100644
index 0000000..e04fdfd
--- /dev/null
+++ b/config/permissions/akP-arrstack-sonarr.yaml
@@ -0,0 +1,6 @@
+# Permission group akP-arrstack-sonarr (name = filename). Per-app entitlement:
+# NOT bound to any application (no `application` field), so it does not gate OIDC.
+# It exists purely to appear in the user's hierarchical `ak_groups` claim, which
+# arrproxy reads (via oauth2-proxy X-Auth-Request-Groups) to decide whether to
+# mint a token allowing the sonarr backend.
+attributes: {}
diff --git a/config/permissions/akP-arrstack-user.yaml b/config/permissions/akP-arrstack-user.yaml
new file mode 100644
index 0000000..c06b621
--- /dev/null
+++ b/config/permissions/akP-arrstack-user.yaml
@@ -0,0 +1,4 @@
+# Permission group akP-arrstack-user (name = filename). Front-door access to the
+# arrstack application: bound to the arrstack oauth2 app, so only members of this
+# group (or any role that nests it) can complete OIDC to the front door.
+application: arrstack
diff --git a/config/providers_oauth2/arrstack.yaml b/config/providers_oauth2/arrstack.yaml
new file mode 100644
index 0000000..32a8afe
--- /dev/null
+++ b/config/providers_oauth2/arrstack.yaml
@@ -0,0 +1,21 @@
+# OAuth2/OIDC provider + application for the arrstack front door
+# (arrstack.unkin.net). An oauth2-proxy sidecar in front of the `arrproxy` Go
+# service performs the OIDC login; arrproxy then derives which apps (sonarr,
+# radarr, prowlarr) a user may reach from the user's group membership.
+# client_secret is read from Vault (seeded out of band), never committed.
+name: arrstack
+authorization_flow: default-provider-authorization-implicit-consent
+invalidation_flow: default-provider-invalidation-flow
+client_type: confidential
+client_id: arrstack
+launch_url: https://arrstack.unkin.net/
+client_secret_vault:
+  mount: kv
+  path: kubernetes/namespace/arrstack/default/oauth-credentials
+scope_mappings:
+  - goauthentik.io/providers/oauth2/scope-openid
+  - goauthentik.io/providers/oauth2/scope-email
+  - goauthentik.io/providers/oauth2/scope-profile
+redirect_uris:
+  - matching_mode: strict
+    url: https://arrstack.unkin.net/oauth2/callback
diff --git a/config/roles/akR-arrstack-user.yaml b/config/roles/akR-arrstack-user.yaml
new file mode 100644
index 0000000..1791447
--- /dev/null
+++ b/config/roles/akR-arrstack-user.yaml
@@ -0,0 +1,10 @@
+# Role akR-arrstack-user (name = filename): full media access. Nests the
+# arrstack front-door permission plus every per-app entitlement, so a member can
+# log in at the front door and arrproxy will allow sonarr, radarr and prowlarr.
+# For narrower access, assign the individual akP-arrstack-<app> permission groups
+# (together with akP-arrstack-user for the door) to a user directly instead.
+permissions:
+  - akP-arrstack-user
+  - akP-arrstack-sonarr
+  - akP-arrstack-radarr
+  - akP-arrstack-prowlarr
diff --git a/config/roles/akR-global-admin.yaml b/config/roles/akR-global-admin.yaml
index 6c3af26..d7df0fc 100644
--- a/config/roles/akR-global-admin.yaml
+++ b/config/roles/akR-global-admin.yaml
@@ -4,3 +4,9 @@ permissions:
   - akP-argocd-admin
   - akP-rancher-admin
   - akP-litellm-admin
+  # arrstack has no admin tier (it is a proxy front door); grant global admins
+  # the front door plus every per-app entitlement so they reach all media apps.
+  - akP-arrstack-user
+  - akP-arrstack-sonarr
+  - akP-arrstack-radarr
+  - akP-arrstack-prowlarr