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Cron Expression Parser
x402
Cron Expression Parser is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-11).
Parses a 5/6-field cron expression or @macro into a plain-English summary, per-field breakdown, and the next N scheduled run times from a given base time and UTC offset.
Price / call$0.002
Success—
StatusUnknown
How this service works
Parse a 5/6-field cron expression or @macro: plain-English summary, per-field breakdown, and the next N run times from a base time in any UTC offset.
Output
Returns a plain-English description of the schedule, a per-field breakdown of the cron expression (minute, hour, day-of-month, month, day-of-week, and optionally seconds), and a list of the next N concrete datetime timestamps when the job will fire, calculated from the specified base time and UTC offset.
Example use cases
Explain a cron job in plain English
“I have this cron expression '30 6 1 * *' and I have no idea what it means — can you explain it in plain English, break down each field, and show me the next 3 times it will run starting from today at UTC+0?”
Debug a production scheduler
“Our job runs on '0 0 * * 0' and I need to verify it — can you parse that cron expression, confirm what it does, and list the next 10 run times from 2024-06-01 00:00 UTC so I can cross-check our logs?”
Understand a @macro schedule
“What does the @weekly cron macro actually mean? Give me the plain-English explanation, the field breakdown, and the next 5 scheduled times starting from Monday 2024-07-01 at UTC-5.”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/v1/cron-parser?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to explain, validate, or compute the schedule of a cron expression or standard @macro (like @daily, @weekly) and want both a human-readable summary and concrete future run timestamps. Prefer this over a generic date/time library when you need the full package — per-field breakdown plus next-N-times — without writing your own parser, especially in agent workflows where the result needs to be surfaced to non-technical users.
Side effects
- Invalid cron expression syntax returns a parse error
- Unsupported field count (e.g. 4-field or 7-field expressions) may fail
- Unrecognized @macro names return an error
- Invalid UTC offset format causes a bad request
- Requesting an excessively large N may be rejected or rate-limited
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| base | string | |
| count | number | |
| expression | string |
Output
Schema · Response
{
"type": "json",
"example": {
"next_runs": [
"..."
],
"description": "every 15 minutes ..."
}
}Tags
x402
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