Uptime Monitor

Monitor uptime of websites/services and alert when down. Use when checking if a website is reachable, monitoring service health, or getting alerted on downtime.

Monitor HTTP endpoints and alert when services go down.

Environment Variables

Variable	Required	Default	Description
MONITOR_URLS	Yes	—	Comma-separated list of URLs to monitor
ALERT_WEBHOOK_URL	No	—	Webhook URL to send alerts (Discord, Slack, etc.)
CHECK_INTERVAL	No	60	Interval in seconds between checks
ALERT_EMAIL	No	—	Email address for alert notifications

Scripts

check.sh — HTTP Health Check

Performs HTTP check with response time measurement.

./scripts/check.sh <url>

Output:

OK|https://example.com|200|245ms
FAIL|https://example.com|000|timeout

Exit code: 0 = up, 1 = down

alert.sh — Send Alert

Sends alert via webhook or email when a service is down.

./scripts/alert.sh <url> <status_code> <response_time> <error_message>

report.sh — Uptime Report

Generates a daily uptime summary from the log file.

./scripts/report.sh

Output: Markdown-formatted report with uptime % per URL.

Usage Example

export MONITOR_URLS="https://example.com,https://api.example.com"
export ALERT_WEBHOOK_URL="https://discord.com/api/webhooks/..."
export CHECK_INTERVAL=60

# Run a single check
./scripts/check.sh https://example.com

# Generate report
./scripts/report.sh

Notes

• Uses curl with a 10-second timeout for checks
• Logs results to ~/.openclaw/workspace/skills/uptime-monitor/logs/status.log
• Alert webhook expects a JSON payload (compatible with Discord/Slack/PagerDuty)