diff --git a/.spectral-required.yml b/.spectral-required.yml
index e2ba4b4..e9b7dec 100644
--- a/.spectral-required.yml
+++ b/.spectral-required.yml
@@ -4,6 +4,10 @@
 # OpenAPI Specification version 3.x
 extends: [spectral:oas]
 
+functions:
+  - date
+  - xEnturPermissions
+
 rules:
   no-$ref-siblings: "off"
   # These generate too many false positives
@@ -15,52 +19,11 @@ rules:
   # -------------------------------------------------------------------------
 
   entur-permissions:
-    message: "x-entur-permissions must match the schema"
     documentationUrl: "https://github.com/entur/api-guidelines/blob/main/guidelines.md#233-documenting-permissions-for-partner-endpoints"
     severity: error
     given: $.paths.*[get,post,put,patch,delete,options,head,trace].x-entur-permissions
     then:
-      function: schema
-      functionOptions:
-        schema:
-          type: object
-          required:
-            - value
-          properties:
-            description:
-              type: string
-            value:
-              $ref: "#/$defs/permission-node"
-          $defs:
-            permission-node:
-              oneOf:
-                - $ref: "#/$defs/permission-leaf"
-                - $ref: "#/$defs/permission-all"
-                - $ref: "#/$defs/permission-any"
-
-            permission-leaf:
-              type: string
-              pattern: "^[0-9a-zA-ZæøåØÆÅ][0-9a-zA-ZæøåØÆÅ.\\-]{0,99}:(les|opprett|endre|slett)$"
-
-            permission-all:
-              type: object
-              required:
-                - all
-              properties:
-                all:
-                  type: array
-                  items:
-                    - $ref: "#/$defs/permission-node"
-
-            permission-any:
-              type: object
-              required:
-                - any
-              properties:
-                any:
-                  type: array
-                  items:
-                    - $ref: "#/$defs/permission-node"
+      function: xEnturPermissions
 
   # -------------------------------------------------------------------------
   # 2.4 Entur Metadata
@@ -133,3 +96,51 @@ rules:
       function: pattern
       functionOptions:
         match: ^[a-z0-9]+(-[a-z0-9]+)*$
+
+  # -------------------------------------------------------------------------
+  # 2.5 Lifecycle
+  # -------------------------------------------------------------------------
+
+  ## On API level
+  entur-stability-level-api:
+    documentationUrl: "https://github.com/entur/api-guidelines/blob/main/guidelines.md#25-lifecycle"
+    severity: error
+    given: $.info.x-stability-level
+    then:
+      function: enumeration
+      functionOptions:
+        values: [draft, beta, stable]
+
+  entur-deprecation-api:
+    documentationUrl: "https://github.com/entur/api-guidelines/blob/main/guidelines.md#254-deprecation"
+    severity: error
+    given: $.info.x-deprecated
+    then:
+      function: schema
+      functionOptions:
+        schema:
+          type: boolean
+
+  entur-sunset-format-api:
+    documentationUrl: "https://github.com/entur/api-guidelines/blob/main/guidelines.md#254-deprecation"
+    severity: error
+    given: $.info.x-sunset
+    then:
+      function: date
+
+  # On individual operation level
+  entur-stability-level-operation:
+    documentationUrl: "https://github.com/entur/api-guidelines/blob/main/guidelines.md#25-lifecycle"
+    severity: error
+    given: $.paths.*[get,post,put,patch,delete,options,head,trace].x-stability-level
+    then:
+      function: enumeration
+      functionOptions:
+        values: [draft, beta, stable]
+
+  entur-sunset-format-operation:
+    documentationUrl: "https://github.com/entur/api-guidelines/blob/main/guidelines.md#254-deprecation"
+    severity: error
+    given: $.paths.*[get,post,put,patch,delete,options,head,trace].x-sunset
+    then:
+      function: date