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Cron Next Occurrence Calculator
x402
Cron Next Occurrence Calculator is a paid API for AI agents from pastable-x402.pages.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Given a cron expression, returns the next N scheduled execution times as ISO 8601 timestamps
Price / call$0.02
Success—
StatusUnknown
How this service works
Pay-per-call utility APIs for agents: EVM helpers (checksum, unit conversion, keccak), data transforms (CSV to JSON, JSON diff, URL canonicalisation), text tools (hashing, JWT decode), and Bazaar market intelligence. x402 on Base mainnet.
Output
A JSON object containing the original cron expression, an array of ISO 8601 UTC timestamp strings for the next N scheduled occurrences, and a boolean 'exhausted_search' flag indicating whether the cron expression has no further future occurrences within the search window.
Example use cases
Preview weekday morning job schedule
“My cron job runs on '0 9 * * 1-5' — show me the next 3 times it will execute so I can confirm it only fires on weekdays at 9am UTC.”
Validate end-of-month billing cron
“I have a billing task set to '0 0 28-31 * *' — give me the next 10 occurrences so I can see if it correctly hits end-of-month dates.”
Check frequency of high-frequency poller
“My polling cron is '*/5 * * * *', tell me the next 8 execution times so I can estimate how many calls it'll make in the next 40 minutes.”
Technical details
Endpoint
GEThttps://pastable-x402.pages.dev/time/cron-nextWhen to prefer
Use this endpoint when an AI agent needs to preview, validate, or reason about upcoming execution times for a cron-scheduled task — especially useful for confirming scheduling logic before deploying a job, estimating workload frequency, or surfacing human-readable fire times from a raw cron string. It accepts standard 5-field cron expressions and returns concrete UTC timestamps.
Side effects
- Invalid cron expression string returns an error or empty results
- Non-numeric or missing 'count' parameter may default to 5 or return a validation error
- Cron expressions with no future occurrences return exhausted_search: true with an empty array
- Missing required 'expr' query parameter results in a 400-level error
- Payment failure via x402 returns HTTP 402 before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"expr": "0 9 * * 1-5",
"next": [
"2026-08-03T09:00:00.000Z",
"2026-08-04T09:00:00.000Z",
"2026-08-05T09:00:00.000Z"
],
"exhausted_search": false
}
}Tags
x402
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