diff --git a/scripts/gateway-watchdog.sh b/scripts/gateway-watchdog.sh
new file mode 100755
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--- /dev/null
+++ b/scripts/gateway-watchdog.sh
@@ -0,0 +1,115 @@
+#!/bin/bash
+# gateway-watchdog.sh — 检测 OpenClaw Gateway 429 并自动重启
+# 
+# 机制：
+#   1. 检查最近 CHECK_WINDOW 秒内的 session jsonl 日志
+#   2. 统计 429 错误次数（errorCode=1305 或 errorMessage 含 "429"）
+#   3. 连续 THRESHOLD 次检测都发现新 429 → 重启 Gateway
+#
+# 部署：cron 每分钟执行一次
+#   * * * * * /Users/chufeng/.openclaw/sanguo_projects/sanguo_moziplus_v2/scripts/gateway-watchdog.sh >> /tmp/gateway-watchdog.log 2>&1
+
+set -euo pipefail
+
+# === 配置 ===
+CHECK_WINDOW=120          # 检查最近多少秒的日志
+THRESHOLD=3               # 连续检测到多少次 429 才重启
+STATE_FILE="/tmp/gateway-watchdog-429-count"
+LOG_DIR="/Users/chufeng/.openclaw/agents"
+RESTART_CMD="openclaw gateway restart"
+HEALTH_CMD="openclaw gateway health"
+
+# === 函数 ===
+
+log() {
+    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"
+}
+
+# 统计最近的 429 错误数
+count_recent_429() {
+    local cutoff=$(date -u -v-${CHECK_WINDOW}S '+%Y-%m-%dT%H:%M:%S' 2>/dev/null || date -u -d "${CHECK_WINDOW} seconds ago" '+%Y-%m-%dT%H:%M:%S')
+    local count=0
+
+    # 遍历所有 agent 的 session jsonl
+    for jsonl in "$LOG_DIR"/*/sessions/*.jsonl; do
+        [ -f "$jsonl" ] || continue
+        # 只看最近修改的文件（性能优化）
+        local mtime
+        mtime=$(stat -f %m "$jsonl" 2>/dev/null || stat -c %Y "$jsonl" 2>/dev/null)
+        local now=$(date +%s)
+        local age=$(( now - mtime ))
+        # 文件超过 CHECK_WINDOW 秒没修改就跳过
+        [ "$age" -gt "$CHECK_WINDOW" ] && continue
+
+        # 搜索 429 错误：errorCode=1305 或 errorMessage 含 "429"
+        local found
+        found=$(grep -c '"errorCode".*"1305"\|"errorMessage".*"429"' "$jsonl" 2>/dev/null || echo 0)
+        # 进一步过滤：只统计时间窗口内的
+        if [ "$found" -gt 0 ]; then
+            local recent
+            recent=$(python3 -c "
+import json, sys
+cutoff = '${cutoff}'
+count = 0
+with open('${jsonl}') as f:
+    for line in f:
+        try:
+            d = json.loads(line)
+            ts = d.get('timestamp', '')[:19]
+            if ts < cutoff:
+                continue
+            msg = d.get('message', {})
+            if msg.get('stopReason') == 'error':
+                err = str(msg.get('errorMessage', ''))
+                code = str(msg.get('errorCode', ''))
+                if '429' in err or '1305' in code:
+                    count += 1
+        except:
+            pass
+print(count)
+" 2>/dev/null || echo 0)
+            count=$(( count + recent ))
+        fi
+    done
+    echo "$count"
+}
+
+# === 主逻辑 ===
+
+# 1. 先检查 Gateway 是否在运行
+if ! $HEALTH_CMD &>/dev/null; then
+    log "WARN: Gateway health check failed, attempting restart"
+    $RESTART_CMD 2>&1 || true
+    echo 0 > "$STATE_FILE"
+    exit 0
+fi
+
+# 2. 统计最近 429 错误
+four29_count=$(count_recent_429)
+
+# 3. 读取连续计数
+consecutive=0
+if [ -f "$STATE_FILE" ]; then
+    consecutive=$(cat "$STATE_FILE")
+fi
+
+# 4. 判断
+if [ "$four29_count" -gt 0 ]; then
+    consecutive=$(( consecutive + 1 ))
+    log "429 detected: ${four29_count} recent errors, consecutive=${consecutive}/${THRESHOLD}"
+else
+    if [ "$consecutive" -gt 0 ]; then
+        log "429 cleared (was ${consecutive} consecutive, now 0)"
+    fi
+    consecutive=0
+fi
+
+echo "$consecutive" > "$STATE_FILE"
+
+# 5. 达到阈值 → 重启
+if [ "$consecutive" -ge "$THRESHOLD" ]; then
+    log "ALERT: ${consecutive} consecutive 429 detections, restarting Gateway"
+    $RESTART_CMD 2>&1
+    log "Gateway restart completed"
+    echo 0 > "$STATE_FILE"
+fi