diff --git a/dupes.sh b/dupes.sh
new file mode 100755
index 0000000..b9b9101
--- /dev/null
+++ b/dupes.sh
@@ -0,0 +1,9 @@
+OUTPUT=$(cat pools-v2.json | jq 'group_by(.id) | map(select(length>1) | .[])')
+
+if [ "$OUTPUT" = "[]" ]; then
+    echo "no duplicate pool ids found"
+    exit 0
+else
+    echo "duplicate pool ids found: $OUTPUT"
+    exit 1
+fi
\ No newline at end of file