diff --git a/scripts/register-guild-node.sh b/scripts/register-guild-node.sh
new file mode 100755
index 0000000..1ed25ba
--- /dev/null
+++ b/scripts/register-guild-node.sh
@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Usage:
+#   scripts/register-guild-node.sh <node_id> <name> <endpoint>
+# Example:
+#   scripts/register-guild-node.sh guild-node-1 "Guild Node 1" "http://backend-guild:7002"
+
+if [[ $# -ne 3 ]]; then
+  echo "Usage: $0 <node_id> <name> <endpoint>" >&2
+  exit 1
+fi
+
+NODE_ID="$1"
+NODE_NAME="$2"
+NODE_ENDPOINT="$3"
+
+if ! command -v docker >/dev/null 2>&1; then
+  echo "docker not found" >&2
+  exit 1
+fi
+
+if ! docker compose ps backend-center >/dev/null 2>&1; then
+  echo "backend-center service is not available in current docker compose project" >&2
+  exit 1
+fi
+
+RESULT_JSON=$(docker compose exec -T \
+  -e REG_NODE_ID="$NODE_ID" \
+  -e REG_NODE_NAME="$NODE_NAME" \
+  -e REG_NODE_ENDPOINT="$NODE_ENDPOINT" \
+  backend-center node -e "
+(async () => {
+  const nodeId = process.env.REG_NODE_ID;
+  const name = process.env.REG_NODE_NAME;
+  const endpoint = process.env.REG_NODE_ENDPOINT;
+
+  const res = await fetch('http://127.0.0.1:7001/api/nodes/register', {
+    method: 'POST',
+    headers: {
+      'content-type': 'application/json',
+      'x-fabric-version': '1',
+    },
+    body: JSON.stringify({ nodeId, name, endpoint }),
+  });
+
+  const text = await res.text();
+  let data;
+  try { data = JSON.parse(text); } catch { data = { raw: text }; }
+
+  process.stdout.write(JSON.stringify({ status: res.status, data }));
+})();
+" )
+
+STATUS=$(node -e "const o=JSON.parse(process.argv[1]);process.stdout.write(String(o.status));" "$RESULT_JSON")
+
+if [[ "$STATUS" != "201" ]]; then
+  echo "registration failed: $RESULT_JSON" >&2
+  exit 1
+fi
+
+API_KEY=$(node -e "const o=JSON.parse(process.argv[1]);process.stdout.write(o.data?.apiKey||'');" "$RESULT_JSON")
+NODE_ID_OUT=$(node -e "const o=JSON.parse(process.argv[1]);process.stdout.write(o.data?.node?.nodeId||'');" "$RESULT_JSON")
+
+if [[ -z "$API_KEY" ]]; then
+  echo "registration succeeded but no apiKey returned: $RESULT_JSON" >&2
+  exit 1
+fi
+
+echo "Node registered: $NODE_ID_OUT"
+echo "CENTER_API_KEY=$API_KEY"