diff --git a/scripts/check_rpc_and_log.sh b/scripts/check_rpc_and_log.sh
new file mode 100644
index 00000000..c70d4459
--- /dev/null
+++ b/scripts/check_rpc_and_log.sh
@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Check L1 and L2 JSON-RPC endpoints and log the results to a file.
+
+L1_RPC="${L1_RPC_URL:-http://localhost:8545}"
+L2_RPC="${L2_RPC_URL:-http://localhost:9000}"
+LOG_FILE="${LOG_FILE:-./rpc_health.log}"
+TIMESTAMP=$(date +"%Y-%m-%d %H:%M:%S")
+
+check_rpc() {
+  local name="$1"
+  local url="$2"
+  if curl -s -H "Content-Type: application/json" \
+       -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}' \
+       "$url" >/dev/null; then
+    echo "$TIMESTAMP [$name] OK" >>"$LOG_FILE"
+  else
+    echo "$TIMESTAMP [$name] ERROR" >>"$LOG_FILE"
+  fi
+}
+
+check_rpc "L1" "$L1_RPC"
+check_rpc "L2" "$L2_RPC"