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Swift Bot Labs Toolbox – Cron Next Occurrence Calculator
x402
Swift Bot Labs Toolbox – Cron Next Occurrence Calculator is a paid API for AI agents from x402-toolbox.swiftbotlab.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).
Computes the next N scheduled fire times for a cron expression, optionally anchored to a specific start time and timezone.
Price / call$0.003
Success—
StatusUnknown
How this service works
62 small, deterministic utility APIs (DNS and e-mail checks, web extraction, EVM decoding, x402 checks, IP math, JSON/CSV, hashing, conversions). No account or API key: pay per call in USDC with x402.
Output
Returns a JSON object with ok:true, the tool name 'cron-next', and a result containing the evaluated cron expression plus an array of upcoming fire times each with a UTC ISO timestamp and a local timezone-adjusted ISO timestamp.
Example use cases
Verify weekday job schedule
“I have a cron expression '30 9 * * mon-fri' — can you tell me the next 5 times it will run, displayed in Eastern time?”
Debug delayed pipeline trigger
“My data pipeline uses the cron '0 2 * * *' and I think it missed a run. Starting from 2024-06-15T00:00:00Z, when was the next time it should have fired in UTC?”
Preview monthly report schedule
“When will '0 8 1 * *' next trigger? Show me the next 3 occurrences in Europe/London time so I can plan the report review meeting.”
Technical details
Endpoint
GEThttps://x402-toolbox.swiftbotlab.workers.dev/v1/cron/next?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, deterministic calculation of upcoming cron fire times without spinning up a cron library locally. Ideal for agents validating scheduled job configurations, previewing automation schedules, or debugging missed triggers. Prefer it over general-purpose code execution when you want a pay-per-call, stateless solution with no account setup required.
Side effects
- Invalid or malformed cron expression returns an error response
- Unrecognized timezone string may cause computation failure or fallback to UTC
- Missing required 'expression' query parameter returns a 400-level error
- count value out of supported range may be ignored or cause an error
- Payment not provided or insufficient USDC causes HTTP 402 response before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"tool": "cron-next",
"result": {
"next": [
{
"utc": "2026-10-27T13:30:00.000Z",
"local": "2026-10-27T09:30:00-04:00"
}
],
"expression": "30 9 * * mon-fri"
}
}
}Tags
x402
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