diff --git a/packages/auth.lua b/packages/auth.lua
index 1ad4d1d..7b4f434 100644
--- a/packages/auth.lua
+++ b/packages/auth.lua
@@ -111,5 +111,22 @@ elseif action == "group" then
         end
 
         local result = auth.add_user_to_group(target_user, group)
+    elseif subaction == "check" then
+        local target_user = args[3]
+        local group = args[4]
+        if target_user == nil or group == nil then
+            io.write("Usage: auth group check <user> <group>\n")
+            return
+        end
+
+        local result = auth.check_user_in_group(target_user, group)
+        if result then
+            io.write("User " .. target_user .. " is in group " .. group .. "\n")
+        else
+            io.write("User " .. target_user .. " is not in group " .. group .. "\n")
+        end
+    else
+        io.write("Usage: auth group <list:check:add>\n")
+        return
     end
 end
\ No newline at end of file