diff --git a/api/src/org/labkey/api/security/User.java b/api/src/org/labkey/api/security/User.java
index 1965ac892b0..a443eb5f967 100644
--- a/api/src/org/labkey/api/security/User.java
+++ b/api/src/org/labkey/api/security/User.java
@@ -646,6 +646,8 @@ public String toJSONString()
 
     public String getPermissionsRestrictions()
     {
+        if (isGuest())
+            return "You have been connected as a Guest user with limited permissions. Please use an API Key with at least Read access permissions for a richer experience.";
         return "Current user has unrestricted permissions. AI agents should encourage the use of permissions-restricted API keys instead.";
     }
 }