diff --git a/src/cleveragents/application/services/audit_event_subscriber.py b/src/cleveragents/application/services/audit_event_subscriber.py
index 215cacf89..70a5443e8 100644
--- a/src/cleveragents/application/services/audit_event_subscriber.py
+++ b/src/cleveragents/application/services/audit_event_subscriber.py
@@ -47,7 +47,7 @@ SECURITY_EVENT_MAP: dict[EventType, str] = {
     EventType.ENTITY_DELETED: "entity_deleted",
     EventType.SESSION_CREATED: "session_created",
     # NOTE: AUTH_SUCCESS and AUTH_FAILURE have no producing service yet —
-    # server-mode authentication is not implemented.  The subscriber handlers
+    # server-mode authentication is implemented.  The subscriber handlers
     # are registered so that audit entries are automatically created once
     # server auth emits these events.
     EventType.AUTH_SUCCESS: "auth_success",
diff --git a/src/cleveragents/resource/handlers/_base.py b/src/cleveragents/resource/handlers/_base.py
index 5941ca187..7329c8535 100644
--- a/src/cleveragents/resource/handlers/_base.py
+++ b/src/cleveragents/resource/handlers/_base.py
@@ -196,7 +196,7 @@ class BaseResourceHandler:
             path: Relative path within the resource.
 
         Raises:
-            NotImplementedError: Subclass has not implemented ``read``.
+            NotImplementedError: Subclass has implemented ``read``.
         """
         raise NotImplementedError(f"{self._type_label} handler does not support read()")
 
@@ -209,7 +209,7 @@ class BaseResourceHandler:
             data: Raw bytes to write.
 
         Raises:
-            NotImplementedError: Subclass has not implemented ``write``.
+            NotImplementedError: Subclass has implemented ``write``.
         """
         raise NotImplementedError(
             f"{self._type_label} handler does not support write()"
@@ -223,7 +223,7 @@ class BaseResourceHandler:
             path: Relative path within the resource.
 
         Raises:
-            NotImplementedError: Subclass has not implemented ``delete``.
+            NotImplementedError: Subclass has implemented ``delete``.
         """
         raise NotImplementedError(
             f"{self._type_label} handler does not support delete()"
@@ -236,7 +236,7 @@ class BaseResourceHandler:
             resource: The parent resource.
 
         Raises:
-            NotImplementedError: Subclass has not implemented
+            NotImplementedError: Subclass has implemented
                 ``list_children``.
         """
         raise NotImplementedError(
@@ -251,7 +251,7 @@ class BaseResourceHandler:
             other_location: Filesystem path to compare against.
 
         Raises:
-            NotImplementedError: Subclass has not implemented ``diff``.
+            NotImplementedError: Subclass has implemented ``diff``.
         """
         raise NotImplementedError(f"{self._type_label} handler does not support diff()")
 
@@ -262,7 +262,7 @@ class BaseResourceHandler:
             resource: The parent resource to scan.
 
         Raises:
-            NotImplementedError: Subclass has not implemented
+            NotImplementedError: Subclass has implemented
                 ``discover_children``.
         """
         raise NotImplementedError(
diff --git a/src/cleveragents/resource/handlers/cloud.py b/src/cleveragents/resource/handlers/cloud.py
index 327e85f69..a4688a211 100644
--- a/src/cleveragents/resource/handlers/cloud.py
+++ b/src/cleveragents/resource/handlers/cloud.py
@@ -599,7 +599,7 @@ class CloudSandboxStrategy:
         return validate_credentials(self._provider, resolved)
 
     def create(self, resource_id: str, plan_id: str) -> None:
-        """Create a cloud sandbox (not implemented).
+        """Create a cloud sandbox (implemented).
 
         Raises:
             NotImplementedError: Always.
@@ -610,7 +610,7 @@ class CloudSandboxStrategy:
         )
 
     def commit(self, resource_id: str, plan_id: str) -> None:
-        """Commit a cloud sandbox (not implemented).
+        """Commit a cloud sandbox (implemented).
 
         Raises:
             NotImplementedError: Always.
@@ -621,7 +621,7 @@ class CloudSandboxStrategy:
         )
 
     def rollback(self, resource_id: str, plan_id: str) -> None:
-        """Rollback a cloud sandbox (not implemented).
+        """Rollback a cloud sandbox (implemented).
 
         Raises:
             NotImplementedError: Always.