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Cron Expression Explainer
x402
Cron Expression Explainer is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0216/call, status unknown (last checked 2026-09-14).
Parses a cron expression into a human-readable explanation and returns the next N scheduled execution times
Price / call$0.0216
Success—
StatusUnknown
How this service works
Parse a cron expression into human-readable explanation + next N execution times. Algorithmic — instant.
Output
Returns a human-readable description of what the cron expression does (e.g. 'At 9:00 AM, Monday through Friday') along with a list of the next N scheduled execution timestamps, computed for the specified timezone.
Example use cases
Example prompt
“Can you explain what the cron expression '0 9 * * 1-5' means in plain English and show me the next 10 times it will run in the America/New_York timezone?”
Technical details
Endpoint
GEThttps://api.strale.io/x402/cron-explainWhen to prefer
Use this endpoint when you need to interpret or validate a cron expression for a human user, preview upcoming job execution times, or debug a scheduled task. Ideal for DevOps dashboards, CI/CD pipelines, or any workflow that needs to translate cron syntax into understandable schedules without spinning up a scheduler.
Side effects
- Invalid cron expression format returns a parse error
- Unsupported number of fields (fewer than 5 or more than 7) may cause failure
- Unknown or malformed timezone string returns an error
- Missing required cron_expression parameter returns a 400-level error
- num_next set to an excessively large value may be rejected or truncated
Input
{
"num_next": 10,
"timezone": "America/New_York",
"cron_expression": "0 9 * * 1-5"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"_meta": {
"payment": {
"method": "x402",
"price_usd": 0.0216,
"settlement_id": "0x87cecad549fe34a5ca92d11d95abdd5c99ccec841ad825b57aba0dcbd1d28d59"
},
"capability": "cron-explain",
"latency_ms": 3,
"provenance": {
"source": "algorithmic",
"fetched_at": "2026-06-13T04:25:48.249Z"
}
},
"is_valid": true,
"timezone": "America/New_York",
"next_runs": [
"2026-06-15T09:00:00.000Z",
"2026-06-16T09:00:00.000Z",
"2026-06-17T09:00:00.000Z",
"2026-06-18T09:00:00.000Z",
"2026-06-19T09:00:00.000Z",
"2026-06-22T09:00:00.000Z",
"2026-06-23T09:00:00.000Z",
"2026-06-24T09:00:00.000Z",
"2026-06-25T09:00:00.000Z",
"2026-06-26T09:00:00.000Z"
],
"explanation": "At 9:00, Monday through Friday",
"cron_expression": "0 9 * * 1-5",
"field_breakdown": [
{
"field": "minute",
"value": "0",
"meaning": "at 0"
},
{
"field": "hour",
"value": "9",
"meaning": "at 9"
},
{
"field": "day of month",
"value": "*",
"meaning": "every value"
},
{
"field": "month",
"value": "*",
"meaning": "every value"
},
{
"field": "day of week",
"value": "1-5",
"meaning": "range 1-5"
}
]
}Tags
x402
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