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Cron Expression Generator (AI)

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Describe a schedule in plain English and get back a standard 5-field cron expression, a plain-English recap of when it fires, and a field-by-field breakdown, powered by GPT-4o mini

Describe a schedule the way you'd say it out loud, like "every weekday at 9am" or "at midnight on the first of every month", and GPT-4o mini returns a standard 5-field cron expression along with a plain-English recap and a field-by-field breakdown of what each part means. This is a server-backed AI tool, not a browser-only utility, so the description text is sent to OpenAI's API to generate the response, unlike the purely client-side Cron Parser. It targets standard 5-field cron (minute, hour, day-of-month, month, day-of-week), the format crontab and GitHub Actions both use; if your description is genuinely ambiguous, like "a few times a week", the response includes a warning about the assumption it made. Treat the output as a strong starting point rather than a guarantee: paste the generated expression into the companion Cron Parser or Cron Next Runs tool to confirm it fires exactly when you expect before deploying a schedule change.

cronscheduleaigeneratetime

How to use Cron Expression Generator (AI)

  • 1.Type a plain-English description like "every weekday at 9am" and get back a working 5-field cron expression.
  • 2.Read the plain-English recap and field-by-field breakdown to confirm the schedule matches what you meant.
  • 3.Paste the generated expression into the Cron Parser or Cron Next Runs tool to double-check the actual next run times before deploying it.

Frequently asked questions

Does this run in my browser or on a server?
Generation calls GPT-4o mini on the server since it requires an LLM — your description text is sent to OpenAI's API to generate the response.
Is the generated cron expression guaranteed to be correct?
No — treat it as a strong starting point, not a guarantee. Paste it into the Cron Parser or Cron Next Runs tool to confirm it fires exactly when you expect, especially for anything scheduling a production job.
What cron format does it generate?
Standard 5-field cron (minute, hour, day-of-month, month, day-of-week), matching the format used by crontab, GitHub Actions, and most job schedulers. It doesn't generate 6-field cron with seconds precision.
What happens if my description is ambiguous?
The response includes a warnings array explaining any assumption it had to make, for example interpreting "a few times a week" as a specific set of days. Review those before relying on the result.

Use via API, SDK, or MCP

cURL# Free: a few generations/month · Pro: more per month
curl -X POST api.utilix.tech/v1/ai/cron-generate \
  -H "Authorization: Bearer utx_live_..." \
  -H "Content-Type: application/json" \
  -d '{"prompt": "..."}'

Free plan includes a monthly quota; Pro raises the limit. Get an API key from your dashboard · Full API docs →