diff --git a/config/plugins/vault-plugin-secrets-arrstack.yaml b/config/plugins/vault-plugin-secrets-arrstack.yaml
new file mode 100644
index 0000000..fc92851
--- /dev/null
+++ b/config/plugins/vault-plugin-secrets-arrstack.yaml
@@ -0,0 +1,13 @@
+# config/plugins/vault-plugin-secrets-arrstack.yaml
+# Imports (registers) the arrstack secrets plugin in the catalog. Filename =
+# catalog name = mount type. The binary is installed on the OpenBao nodes by
+# Puppet (openbao-plugin-secrets-arrstack RPM ->
+# /opt/openbao-plugins/vault-plugin-secrets-arrstack).
+#
+# sha256 pins the released v0.1.0 binary; bump it in lockstep with any RPM
+# upgrade or OpenBao will refuse to launch the plugin. Registration only
+# succeeds once the Puppet PR has installed the binary on the nodes.
+type: secret
+command: vault-plugin-secrets-arrstack
+version: "0.1.0"
+sha256: "f8ee60ca7ba14819976acb7dc4cfb6799e3e8da8f871d0bb2bd18d1d9e537972"
diff --git a/policies/arrstack/admin.yaml b/policies/arrstack/admin.yaml
new file mode 100644
index 0000000..96b86d8
--- /dev/null
+++ b/policies/arrstack/admin.yaml
@@ -0,0 +1,27 @@
+# Allow management of the arrstack secrets engine (config and roles) by the
+# terraform-vault deployer.
+---
+rules:
+  - path: "arrstack/config"
+    capabilities:
+      - create
+      - update
+      - read
+      - delete
+  - path: "arrstack/roles/*"
+    capabilities:
+      - create
+      - update
+      - delete
+      - read
+      - list
+  - path: "arrstack/roles"
+    capabilities:
+      - read
+      - list
+
+auth:
+  approle:
+    - tf_vault
+  k8s/au/syd1:
+    - woodpecker_terraform_vault
diff --git a/policies/arrstack/creds/prowlarr.yaml b/policies/arrstack/creds/prowlarr.yaml
new file mode 100644
index 0000000..5922685
--- /dev/null
+++ b/policies/arrstack/creds/prowlarr.yaml
@@ -0,0 +1,12 @@
+# Allow the terraform-prowlarr run to mint a Prowlarr-scoped arrproxy key.
+---
+rules:
+  - path: "arrstack/creds/prowlarr"
+    capabilities:
+      - read
+
+auth:
+  approle:
+    - terraform_prowlarr
+  k8s/au/syd1:
+    - woodpecker_terraform_prowlarr
diff --git a/policies/arrstack/creds/radarr.yaml b/policies/arrstack/creds/radarr.yaml
new file mode 100644
index 0000000..7b79acf
--- /dev/null
+++ b/policies/arrstack/creds/radarr.yaml
@@ -0,0 +1,12 @@
+# Allow the terraform-radarr run to mint a Radarr-scoped arrproxy key.
+---
+rules:
+  - path: "arrstack/creds/radarr"
+    capabilities:
+      - read
+
+auth:
+  approle:
+    - terraform_radarr
+  k8s/au/syd1:
+    - woodpecker_terraform_radarr
diff --git a/policies/arrstack/creds/sonarr.yaml b/policies/arrstack/creds/sonarr.yaml
new file mode 100644
index 0000000..5e5ae54
--- /dev/null
+++ b/policies/arrstack/creds/sonarr.yaml
@@ -0,0 +1,12 @@
+# Allow the terraform-sonarr run to mint a Sonarr-scoped arrproxy key.
+---
+rules:
+  - path: "arrstack/creds/sonarr"
+    capabilities:
+      - read
+
+auth:
+  approle:
+    - terraform_sonarr
+  k8s/au/syd1:
+    - woodpecker_terraform_sonarr
diff --git a/policies/kv/kubernetes/namespace/arrstack/default/arrproxy-admin-token/read.yaml b/policies/kv/kubernetes/namespace/arrstack/default/arrproxy-admin-token/read.yaml
new file mode 100644
index 0000000..66d1547
--- /dev/null
+++ b/policies/kv/kubernetes/namespace/arrstack/default/arrproxy-admin-token/read.yaml
@@ -0,0 +1,22 @@
+# Allow the terraform-vault deployer to read the seeded arrproxy admin token so
+# the arrstack engine config module can source it. The token is seeded by
+# argocd-apps #384 at kv/kubernetes/namespace/arrstack/default/arrproxy-admin-token.
+# The deployer's existing secret_backends_read policy only covers
+# kv/data/service/vault/+/+/secret_backend/*, which does not match this
+# kubernetes/namespace path, so this adds the minimal read grant rather than
+# duplicating the secret into the litellm-style path. vault_kv_secret_v2 also
+# reads the kv-v2 metadata path on every plan/apply, so grant that too.
+---
+rules:
+  - path: "kv/data/kubernetes/namespace/arrstack/default/arrproxy-admin-token"
+    capabilities:
+      - read
+  - path: "kv/metadata/kubernetes/namespace/arrstack/default/arrproxy-admin-token"
+    capabilities:
+      - read
+
+auth:
+  approle:
+    - tf_vault
+  k8s/au/syd1:
+    - woodpecker_terraform_vault