diff --git a/contrib/publish-prebuilt.sh b/contrib/publish-prebuilt.sh
new file mode 100755
index 000000000..94bd274ff
--- /dev/null
+++ b/contrib/publish-prebuilt.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+# Helper script to publish a prebuilt wallet-core.
+# Assumes that the prebuilt branch is checked out
+# at ./prebuilt as a git worktree.
+
+set -eu
+
+TAG=$1
+
+pnpm run compile
+mkdir prebuilt/$TAG
+cp packages/taler-wallet-embedded/dist/taler-wallet-embedded.js prebuilt/$TAG/taler-wallet-embedded.js
+git -C prebuilt add .
+git -C prebuilt commit -a -m "prebuilt $TAG"
+git -C prebuilt push
+sha256sum prebuilt/$TAG/taler-wallet-android.js