diff --git a/scripts/package.sh b/scripts/package.sh
new file mode 100755
index 0000000..e7320ec
--- /dev/null
+++ b/scripts/package.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+# Tar the contents of a directory into an asset and write its checksum.
+# Usage: package.sh <asset.tar.gz> <dir>
+set -euo pipefail
+asset="${1:?usage: package.sh <asset.tar.gz> <dir>}"
+dir="${2:?usage: package.sh <asset.tar.gz> <dir>}"
+tar -czf "$asset" -C "$dir" .
+sha256sum "$asset" > "$asset.sha256"
+echo "packaged $asset ($(wc -c < "$asset") bytes) and $asset.sha256"