diff --git a/filters/key_prefix.lua b/filters/key_prefix.lua
new file mode 100644
index 00000000..e17d18c2
--- /dev/null
+++ b/filters/key_prefix.lua
@@ -0,0 +1,12 @@
+-- skip keys prefixed with ABC
+function filter(id, is_base, group, cmd_name, keys, slots, db_id, timestamp_ms)
+    if #keys ~= 1 then
+        return 0, db_id -- allow
+    end
+
+    if string.sub(keys[1], 0, 3) == "ABC" then
+    return 1, db_id -- disallow
+    end
+
+    return 0, db_id -- allow
+end
\ No newline at end of file