CronWatch

CronWatch: Cron monitoring library records job runs in a database and sends alerts when tasks fail, miss schedules, or stall.

CronWatch is a cron monitoring library that mounts directly inside applications for TypeScript, Ruby, Python, PHP, Go, Rust, Elixir, Java, and .NET. It records every scheduled job run in the application's existing database, such as SQLite, Postgres, MySQL, or D1. The library detects missed runs, failures, stuck tasks, slow executions, and budget overruns, sending alerts with error details and output snippets to selected channels. It includes an optional AI triage feature powered by Anthropic and an MCP server for coding agents. The dashboard mounts inside the application at routes like /cronwatch to display run history and status lanes.

CronWatch at a glance

Best for: Software engineer
Runs on: Web, API, CLI
Pricing: Free
Released: October 2026
Category: AI coding tool
Website: cronwatch.dev

Key features

Records job runs in your own database
Detects missed, failed, and stuck jobs
Sends alerts with errors and output
Provides an embedded dashboard
Supports optional AI triage with Anthropic
Includes an MCP server for coding agents
Monitors run duration and metric budgets

Use it for

Monitoring scheduled background jobs and tasks
Detecting silent cron failures and missed runs
Diagnosing failed jobs with error output and logs
Tracking execution time and cost metrics for tasks

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