diff --git a/client/src/lib/api.ts b/client/src/lib/api.ts
index 1b27bbd4..6729f47f 100644
--- a/client/src/lib/api.ts
+++ b/client/src/lib/api.ts
@@ -368,6 +368,16 @@
  *   the signature and return type as stable unless release notes say otherwise.
  *   When behavior changes, update the `@file` overview and relevant tests.
  *
+ * **CodexSandbox**
+ *   Part of this module's public contract. Downstream imports should treat
+ *   the signature and return type as stable unless release notes say otherwise.
+ *   When behavior changes, update the `@file` overview and relevant tests.
+ *
+ * **CodexApproval**
+ *   Part of this module's public contract. Downstream imports should treat
+ *   the signature and return type as stable unless release notes say otherwise.
+ *   When behavior changes, update the `@file` overview and relevant tests.
+ *
  * ----------------------------------------------------------------------------- */
 
 // ─────────────────────────────────────────────────────────────────────────────
diff --git a/client/src/lib/types.ts b/client/src/lib/types.ts
index c3d86f45..78b68a50 100644
--- a/client/src/lib/types.ts
+++ b/client/src/lib/types.ts
@@ -451,6 +451,11 @@
  *   the signature and return type as stable unless release notes say otherwise.
  *   When behavior changes, update the `@file` overview and relevant tests.
  *
+ * **LaneTool**
+ *   Part of this module's public contract. Downstream imports should treat
+ *   the signature and return type as stable unless release notes say otherwise.
+ *   When behavior changes, update the `@file` overview and relevant tests.
+ *
  * ----------------------------------------------------------------------------- */
 
 /**