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Cron Expression Explainer
x402
Cron Expression Explainer is a paid API for AI agents from x402-canary.nicolas-x402-16f380a7.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Parses and explains a cron expression in plain English, returning a human-readable summary of its schedule.
Price / call$0.01
Success—
StatusUnknown
How this service works
Free need-to-tool routing plus pay-per-call npm docs and TypeScript API signatures, npm breaking-change diffs, JavaScript-rendered browser snapshots and deterministic coding-agent checks via AgentCash/x402.
Output
Returns a JSON object with a 'data.summary' field containing a plain-English description of when the cron expression triggers (e.g. 'every minute; hour=9'), plus a 'meta.engine' field identifying the parsing engine used ('cron').
Example use cases
Debugging a job scheduler config
“I've got this cron expression in my CI pipeline: '*/15 8-18 * * MON-FRI' — can you tell me in plain English when it will actually run?”
Reviewing a colleague's scheduled task
“My teammate added '0 0 1 * *' to our cron jobs and I have no idea when that fires — can you explain it?”
Validating a newly written cron schedule
“I just wrote the cron '30 4 * * 0' to run a weekly cleanup — can you confirm in plain English what schedule that actually represents?”
Technical details
Endpoint
POSThttps://x402-canary.nicolas-x402-16f380a7.workers.dev/v1/cron/explainWhen to prefer
Choose this endpoint when an AI coding agent or developer needs a quick, deterministic plain-English explanation of a cron expression without building or maintaining their own parser. It is ideal for pipelines that encounter cron strings in config files, CI/CD YAML, or user-submitted job definitions and need to surface human-readable schedule descriptions. Prefer it over general LLM interpretation when you want a structured, engine-verified output rather than a probabilistic natural language guess.
Side effects
- Invalid or malformed cron expression returns an error or empty summary
- Missing 'expression' field in request body causes a validation error
- Expressions with non-standard syntax (e.g. @reboot, @yearly macros) may not be supported
- Network/worker errors on the Cloudflare Worker may return 5xx responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| expression | string |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"summary": "every minute; hour=9"
},
"meta": {
"engine": "cron"
}
}
}Tags
x402
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