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post/dev-utils/v1/cron1 credit

Explain a cron expression in plain language (15 locales) + compute the next N run times in any IANA timezone (DST-correct).

Working example

Parameters

expressionrequired

5-field cron (min hour dom month dow), @aliases (@daily, @hourly…), or 6-field with seconds first.

runsoptional

How many upcoming run times to return. (1–50)

tzoptional

IANA timezone for the run times (DST handled).

localeoptional

Language of the human explanation.

from_timeoptional

Compute runs after this ISO-8601 instant (default now). Pin it for reproducible output.

request preview

curl -X POST https://api.reefapi.com/dev-utils/v1/cron \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"expression":"*/15 9-17 * * 1-5","runs":"3","tz":"UTC","from_time":"2026-06-10T12:00:00+00:00"}'

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