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Cron Expression Explainer — Next Run Times Calculator
x402
Cron Expression Explainer — Next Run Times Calculator is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Takes a 5-field cron expression and returns the next N scheduled run times in a specified timezone
Price / call$0.003
Success—
StatusUnknown
How this service works
Explain a cron expression: the next N run times in a timezone. Send { expression, count?, timezone? }.
Output
A list of the next N upcoming execution timestamps for the given cron expression, computed in the specified IANA timezone. Timestamps indicate exactly when the scheduled job will fire, helping users verify, debug, or plan around their cron schedules.
Example use cases
Debug a misconfigured cron schedule
“I set up a cron job with the expression '*/15 8-18 * * 1-5' — can you show me the next 10 times it will fire so I can confirm it's running every 15 minutes during business hours on weekdays? Use UTC timezone.”
Validate a monthly billing job schedule
“We have a billing cron with expression '0 0 1 * *' — show me the next 3 run times in America/Los_Angeles so I can confirm it fires at midnight on the 1st of each month.”
Plan capacity around a nightly batch job
“Our nightly data export runs on cron '30 2 * * *' — what are the next 7 run times in Europe/London? I need to make sure our maintenance window doesn't overlap.”
Technical details
Endpoint
POSThttps://x402-services-production.up.railway.app/api/cron/explainWhen to prefer
Use this endpoint when an agent or user needs to quickly parse and preview upcoming execution times for a cron expression without setting up any tooling or accounts. Ideal for debugging scheduled jobs, validating expressions before deployment, or planning around recurring tasks. Prefer this over local cron parsing libraries when operating in a stateless agent environment.
Side effects
- Invalid cron expression (malformed or wrong number of fields) returns an error
- Unrecognized or misspelled IANA timezone string causes a parse failure
- Count parameter of 0 or negative may return empty or error response
- Payment of 0.003 USDC required; unpaid requests return HTTP 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| count | number | How many next runs, default 5 |
| timezone | string | IANA tz |
| expressionrequired | string | 5-field cron expression |
Tags
x402
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