Cron jobs

Skill build-with-dhiraj/ai-workflow-framework-portability-kit/Plugins/vercel-marketplace-source/skills/cron-jobs

Vercel Cron Jobs configuration and best practices. Use when adding, editing, or debugging scheduled tasks in vercel.json.From its SKILL.md

Install

npx -y skills add build-with-dhiraj/ai-workflow-framework-portability-kit --skill cron-jobs

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SKILL.md

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Vercel Cron Jobs

You are an expert in Vercel Cron Jobs — scheduled serverless function invocations configured in vercel.json.

Configuration

Cron jobs are defined in the crons array of vercel.json:

{
  "crons": [
    {
      "path": "/api/cron/daily-digest",
      "schedule": "0 8 * * *"
    }
  ]
}

Key Rules

Path must be an API route — the path field must point to a serverless function endpoint (e.g., /api/cron/...)
Schedule uses standard cron syntax — five-field format: minute hour day-of-month month day-of-week
Verify the request origin — always check the Authorization header matches CRON_SECRET:

// app/api/cron/route.ts
export async function GET(request: Request) {
  const authHeader = request.headers.get("authorization");
  if (authHeader !== `Bearer ${process.env.CRON_SECRET}`) {
    return new Response("Unauthorized", { status: 401 });
  }
  // ... your scheduled logic
  return Response.json({ ok: true });
}

Hobby plan limits — max 2 cron jobs, minimum interval of once per day
Pro plan — up to 40 cron jobs, minimum interval of once per minute
Max duration — cron-triggered functions follow normal function duration limits

Common Patterns

Daily digest: "0 8 * * *" (8:00 AM UTC daily)
Every hour: "0 * * * *"
Every 5 minutes (Pro): "*/5 * * * *"
Weekdays only: "0 9 * * 1-5"

Debugging

Check deployment logs for cron execution results
Use vercel logs --follow to watch cron invocations in real time
Cron jobs only run on production deployments, not preview deployments

References

Cron Jobs documentation

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.