
Know what expires before your users find out.
Most monitoring tells you something broke. StackClock tells you what will break, and when. One timeline for every deadline in your stack: domain and SSL expiry, API keys and licenses, vendor API shutdowns (OpenAI, Stripe, GitHub...), deprecated npm/PyPI/Go packages, known vulnerabilities and end-of-life runtimes. Import a package.json or lock file and it's checked daily. Alerts by email, Slack or webhook. Never stores secrets. Free plan.
StackClock is a SaaS tool that monitors upcoming expirations and vulnerabilities in software stacks, including domain and SSL expiry, API keys, and deprecated packages. It offers daily checks and alerts via email, Slack, or webhook, without storing any secrets.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.