diff --git a/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/AppPermission.kt b/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/AppPermission.kt
index d9a0e625..58355f75 100644
--- a/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/AppPermission.kt
+++ b/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/AppPermission.kt
@@ -1,5 +1,8 @@
 package me.ahoo.cosec.api.permission
 
+/**
+ * App permissions metadata.
+ */
 interface AppPermission {
     val id: String
     val groups: List<PermissionGroup>
diff --git a/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/Permission.kt b/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/Permission.kt
index fb10b28a..45aee0be 100644
--- a/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/Permission.kt
+++ b/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/Permission.kt
@@ -15,6 +15,9 @@ package me.ahoo.cosec.api.permission
 
 import me.ahoo.cosec.api.policy.Statement
 
+/**
+ * Permission metadata.
+ */
 interface Permission : Statement {
     val id: String
     val description: String
diff --git a/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/PermissionGroup.kt b/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/PermissionGroup.kt
index 7e1596d3..ab1a9071 100644
--- a/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/PermissionGroup.kt
+++ b/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/PermissionGroup.kt
@@ -15,6 +15,9 @@ package me.ahoo.cosec.api.permission
 
 import me.ahoo.cosec.api.Named
 
+/**
+ * Permission group.
+ */
 interface PermissionGroup : Named {
     override val name: String
     val description: String
diff --git a/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/RolePermission.kt b/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/RolePermission.kt
index 6aa38fcb..c9a89275 100644
--- a/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/RolePermission.kt
+++ b/cosec-api/src/main/kotlin/me/ahoo/cosec/api/permission/RolePermission.kt
@@ -13,6 +13,9 @@
 
 package me.ahoo.cosec.api.permission
 
+/**
+ * Role Permissions.
+ */
 interface RolePermission {
     /**
      * role id