How do I set up a cron job on Vercel?

Add a "crons" array to your vercel.json. Each entry needs a "path" (your API route) and a "schedule" (standard 5-field cron expression). Deploy and Vercel handles the rest.

What is the cron syntax for vercel.json?

Vercel uses standard Unix 5-field cron: minute hour day-of-month month day-of-week. For example, "0 */6 * * *" runs every 6 hours.

Does Vercel support 6-field cron expressions with seconds?

No. Vercel cron uses the standard 5-field Unix cron format. The minimum interval is 1 minute. You cannot specify seconds.

What are Vercel cron job limits?

Hobby (free): 1 cron job, 60s timeout. Pro: 2 cron jobs, 300s timeout. Enterprise: unlimited cron jobs, configurable timeout. All plans: minimum 1-minute interval, UTC timezone only.

How do I debug a Vercel cron job?

Use vercel logs --follow to stream real-time logs, or check the Functions tab in the Vercel dashboard. Look for the cron trigger in log entries.

Can I use Vercel cron jobs on the free plan?

Yes. The Hobby (free) plan supports 1 cron job with a 60-second function timeout. For multiple cron jobs or longer timeouts, upgrade to Pro.

Vercel Cron Job Syntax Guide & Generator

Generate cron expressions for Vercel scheduled functions. Copy vercel.json configs, preview next run times, and learn the syntax with real examples. Free tool.

Vercel Cron Job Syntax Guide &amp; Generator

Vercel Cron Job Syntax Guide & Generator