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Cron Secret Generator

Generate a cryptographically secure CRON_SECRET for Vercel Cron, GitHub Actions or any scheduled job, with ready-to-paste code to store it and check the Authorization header.

Cron Secret Generator
Read the guide: How to Generate a CRON_SECRET for Vercel Cron Jobs

How to use Cron Secret Generator

  1. 1Pick a format and strength.
  2. 2Copy the secret (or the .env line).
  3. 3Store it on your host and check it in your cron endpoint.

What it does

  • 128–512-bit secrets
  • Hex, Base64url or A–Z 0–9
  • Vercel, GitHub & Cloudflare commands
  • Next.js, Express & Worker checks

FAQ

What is CRON_SECRET?
A shared password your scheduler sends with each run (usually as an Authorization: Bearer header) so your cron endpoint can reject anyone else who finds the URL. Vercel Cron sends it automatically when the CRON_SECRET environment variable is set.
How long should a cron secret be?
256 bits (64 hex characters) is plenty for any scheduled job. Longer is fine but adds no practical security.
Is the secret generated securely?
Yes. It comes from your browser's cryptographically secure random generator (crypto.getRandomValues), is created on your device and is never saved to History.

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