CronWatch

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Cron 任务失败总是悄悄发生？CronWatch 让每个定时任务失败可知、原因可查、异常可警。 轻量、零配置、安装即用，支持 Hermes / Claude Code / OpenCode / Codex 和任意 CLI 命令——无需额外监控任务，不增加轮询负担。

任务失败 → 秒级告警（飞书/钉钉/企业微信/任意 Webhook）
任务变慢 → 自适应基线检测，超常即报
失败原因 → 内置 10 类错误诊断，附修复建议

Why / 为什么用

Scheduled job failures (execution error or delivery error) are usually silent — no notification, discovered days later. The traditional fix — a separate "health-check cron job" that polls job status — is fragile: the monitor itself can fail, detection lags behind the check interval, and it adds another scheduling layer.

CronWatch hooks the post-run choke points of the job lifecycle, so failures are detected the moment they happen.

快速开始 / Quick Start

# 方式一：GitHub Release 安装（推荐）
pip install https://github.com/nicokickcpython/cronwatch/releases/download/v1.0.0/cron_ops-1.0.0-py3-none-any.whl
cron-ops-wrap "daily-backup" -- /path/to/backup.sh

# 方式二：Hermes 插件
hermes plugins install nicokickcpython/cronwatch/cron-health-hook

# 方式三：无依赖 wrapper（零安装，直接下载脚本）
curl -sL https://raw.githubusercontent.com/nicokickcpython/cronwatch/main/cli/cron-ops-wrap.sh -o cron-ops-wrap.sh
chmod +x cron-ops-wrap.sh
./cron-ops-wrap.sh "daily-backup" -- /path/to/backup.sh

系统 crontab 用法：

0 2 * * * cron-ops-wrap "daily-backup" -- /path/to/backup.sh
0 3 * * * cron-ops-wrap "code-review" -- claude -p "review the repo"
0 4 * * * cron-ops-wrap "data-job" -- opencode run "process today's data"

Components / 组件

Component	Answers	Integration	Status
cron-health-hook	Did the job fail?	Hermes plugin	✅
cron-latency-watch	Is the job getting slow?	Hermes plugin	✅
cron-error-analyzer	Why did it fail? How to fix?	Hermes plugin	✅
cron-ops CLI	check / diagnose / alert	all agents	✅
cron-ops-wrap	universal command wrapper	Claude Code/OpenCode/Codex/any	✅
cron-dupe-detector	Was the job fired twice?	Hermes plugin	🚧

CLI Usage / CLI 用法

# diagnose an error string / 诊断错误
cron-ops analyze "429 Too Many Requests"
# → diagnosis: API rate limit / quota exhausted

# check one job status file / 检查任务状态
cron-ops check /path/to/status.json

# check all status files / 批量检查
cron-ops check-all ~/.cron-ops/status/

Alert Configuration / 告警配置

Var	Description	Default
CRON_ALERT_CHAT_ID	Feishu chat_id for alerts	FEISHU_HOME_CHANNEL
CRON_ALERT_WEBHOOK	Generic webhook URL (DingTalk/WeCom/Slack...)	none
CRON_ALERT_COOLDOWN	Cooldown between same-failure alerts (s)	3600
CRON_LATENCY_FACTOR	Alert when duration > factor × rolling avg	3.0
CRON_LATENCY_CEILING	Absolute ceiling seconds	3600
CRON_DUPE_WINDOW	Duplicate-fire window (s)	120
CRON_OPS_STATUS_DIR	Status file dir for wrapper	~/.cron-ops/status/

Diagnosis Knowledge Base / 诊断知识库

Error signature	Diagnosis
429 / rate limit	API rate limited
timeout	network/API timeout
99992402 field validation	Feishu msg validation failed
access denied / 99991672	missing permission scope
401 / invalid_api_key	API key invalid
context length / token	context/token exceeded
script not found	script path wrong
empty response	model empty response
ImportError	missing dependency
OOM / killed	out of memory

Roadmap

• Hermes plugins ×3 (health-hook / latency-watch / error-analyzer)
• Universal CLI (check / check-all / analyze)
• Universal wrapper
• GitHub Release distribution (wheel + sdist)
• 20 automated test cases
• cron-dupe-detector
• Daily execution digest
• Claude Code hooks native adapter
• OpenCode plugin native adapter

License

MIT