diff --git a/src/AxCopilot/Services/Agent/PermissionModeCatalog.cs b/src/AxCopilot/Services/Agent/PermissionModeCatalog.cs
index dab2935..eb8e30f 100644
--- a/src/AxCopilot/Services/Agent/PermissionModeCatalog.cs
+++ b/src/AxCopilot/Services/Agent/PermissionModeCatalog.cs
@@ -2,7 +2,7 @@
 
 /// <summary>
 /// AX Agent permission mode constants and normalization helpers.
-/// Accepts legacy Ask/Auto/Deny values plus claw-code style aliases.
+/// Uses AX-native permission vocabulary only.
 /// </summary>
 public static class PermissionModeCatalog
 {
@@ -21,7 +21,7 @@ public static class PermissionModeCatalog
 
     /// <summary>
     /// Normalize global permission mode.
-    /// Supported aliases: ask/auto/deny/plan plus default, acceptEdits, dontAsk, bypassPermissions.
+    /// Supported values: ask/plan/auto/deny (case-insensitive).
     /// </summary>
     public static string NormalizeGlobalMode(string? value)
     {
@@ -31,13 +31,9 @@ public static class PermissionModeCatalog
         return value.Trim().ToLowerInvariant() switch
         {
             "ask" => Ask,
-            "default" => Ask,
             "plan" => Plan,
             "auto" => Auto,
-            "acceptedits" => Auto,
-            "dontask" => Auto,
             "deny" => Deny,
-            "bypasspermissions" => Deny,
             _ => Ask,
         };
     }