diff --git a/scripts/worldchain-mainnet-snapshot-finish.sh b/scripts/worldchain-mainnet-snapshot-finish.sh
new file mode 100755
index 00000000..77a9f9ce
--- /dev/null
+++ b/scripts/worldchain-mainnet-snapshot-finish.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+set -eu
+
+# Bench helper: extract a downloaded worldchain-mainnet op-reth snapshot into the node volume.
+# Run after the background download to /slowdisk/worldchain-mainnet-snapshot/ completes.
+# For wipe+re-extract recovery, use worldchain-mainnet-snapshot-reseed.sh instead.
+
+DATADIR="${DATADIR:-/var/lib/docker/volumes/rpc_worldchain-mainnet-op-reth-pruned-trace/_data}"
+SNAP="${SNAP:-/slowdisk/worldchain-mainnet-snapshot/reth_full.tar.lz4}"
+
+if [ ! -f "$SNAP" ]; then
+  echo "worldchain-mainnet-snapshot-finish: snapshot not found: $SNAP" >&2
+  exit 1
+fi
+
+mkdir -p "$DATADIR"
+
+echo "worldchain-mainnet-snapshot-finish: extracting $SNAP -> $DATADIR (--strip-components=1)"
+tar --directory "$DATADIR" -I lz4 -xf "$SNAP" --strip-components=1
+
+echo "worldchain-mainnet-snapshot-finish: done"